Q5. (GS) Which cell structure is primarily responsible for ATP production in eukaryotes?
Correct Answer: C
Explanation: Cellular respiration in mitochondria generates ATP.
Citation: ASVAB CEP — General Science, 2025.
Q6. (WK) Choose the best synonym for “admonish.”
Correct Answer: B
Explanation: “Admonish” = caution or warn.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q7. (PC) Passage: “While the prototype performed admirably in controlled trials, field conditions exposed sensitivity to temperature swings, necessitating recalibration between deployments.” What’s the main point?
Correct Answer: B
Explanation: Good lab results; field temperature swings force recalibration.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q8. (AR) A convoy drives 120 miles at 40 mph, then 60 miles at 30 mph due to terrain. What is the average speed for the 180 miles?
Correct Answer: B
Explanation: Time = 120/40 + 60/30 = 3 + 2 = 5 h; Average = 180/5 = 36 mph.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q11. (AS) A bolt labeled “RH thread, 1/2-13” is being tightened. Which tool and direction are correct?
Correct Answer: A
Explanation: Right-hand threads tighten clockwise; torque wrench controls preload.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q12. (MC) Gear A (20 teeth) drives Gear B (40 teeth). If A spins at 300 rpm, B spins at—
Correct Answer: A
Explanation: Speed ratio = 20:40 = 1:2 ⇒ B at half of A = 150 rpm.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q13. (GS) How many grams are in 0.5 moles of water (H₂O)? (Molar mass ≈ 18 g/mol)
Correct Answer: A
Explanation: mass = moles × molar mass = 0.5 × 18 = 9 g.
Citation: ASVAB CEP — General Science, 2025.
Q14. (WK) The word “spurious” most nearly means—
Correct Answer: B
Explanation: “Spurious” = not genuine; counterfeit/false.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q15. (PC) Passage: “Despite the aircraft’s extended range, commanders prioritized refueling stops to synchronize arrival with ground units.” What inference is most supported?
Correct Answer: B
Explanation: Stops were about synchronization, not necessity.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q16. (AR) An item priced at $80 is marked up 25% and then discounted 20%. What is the final price?
Correct Answer: A
Explanation: 80×1.25 = 100; then 100×0.80 = $80.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q17. (MK) Solve the system: 2x + y = 7 and x + y = 4.
Correct Answer: A
Explanation: Subtract equations ⇒ x = 3; then y = 1.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q18. (EI) Two capacitors 4 µF and 6 µF are in parallel. What is the equivalent capacitance?
Q19. (AS) A four-stroke gasoline engine runs at 3,000 rpm. How many power strokes per minute occur in a single cylinder?
Correct Answer: B
Explanation: One power stroke every two revolutions ⇒ 3,000/2 = 1,500 per minute.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q20. (MC) A hydraulic press has a small piston area of 2 cm² and a large piston area of 40 cm². An input force of 50 N is applied to the small piston. Output force at the large piston?
Correct Answer: A
Explanation: Area ratio = 40/2 = 20 ⇒ Fout = 50×20 = 1,000 N.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q21. (GS) Which statement is true about lunar phases?
Correct Answer: B
Explanation: Phases reflect changing illumination as the Moon orbits (~29.5 days).
Citation: ASVAB CEP — General Science, 2025.
Q22. (WK) Select the best word to complete: “The briefing was so ______ that new recruits left more confused.”
Correct Answer: C
Explanation: “Opaque” (figuratively) = hard to understand.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q23. (PC) Passage: “Logistics planners staged supplies forward, accepting higher warehousing costs to slash response times.” What is the author’s purpose?
Correct Answer: B
Explanation: Describes paying more to gain speed (a trade-off).
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q24. (AR) A map scale is 1:50,000. How many kilometers does 12 cm on the map represent?
Correct Answer: A
Explanation: 1 cm → 0.5 km; 12 cm → 6 km.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q25. (MK) A right triangle has legs 9 and 12. What is the area?
Correct Answer: A
Explanation: Area = ½ab = ½×9×12 = 54.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q26. (EI) A 24 Ω resistor carries 0.5 A. What power is dissipated?
Correct Answer: A
Explanation: P = I²R = (0.5)²×24 = 0.25×24 = 6 W.
Citation: ASVAB CEP — Electronics Information, 2025.
Q27. (AS) To cut a tight inside curve in a wooden panel, which hand saw is best?
Correct Answer: B
Explanation: Narrow blade turns within tight radii; hacksaw is for metal.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q28. (MC) A block and tackle provides a mechanical advantage of 4. How much effort lifts an 800 N load (ignoring friction)?
Correct Answer: A
Explanation: Effort = Load/MA = 800/4 = 200 N.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q29. (GS) Which transfer of heat does not require matter?
Correct Answer: C
Explanation: Radiation travels via electromagnetic waves (no medium).
Citation: ASVAB CEP — General Science, 2025.
Q30. (WK) Best synonym for “laconic” is—
Correct Answer: B
Explanation: “Laconic” = using few words; concise.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q31. (PC) Passage: “The briefing outlined contingencies rather than certainties.” Which answer captures the author’s tone?
Correct Answer: B
Explanation: “Contingencies” ⇒ possibilities; tone is tentative/speculative.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q32. (AR) Working alone, A loads a truck in 6 h; B in 8 h. How long together?
Correct Answer: A
Explanation: Rate = 1/6 + 1/8 = 7/24 ⇒ time = 24/7 ≈ 3.43 h ≈ 3.4 h.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q33. (MK) Solve the inequality: 5 − 2x < 11.
Correct Answer: A
Explanation: −2x < 6 ⇒ divide by −2 (flip sign) ⇒ x > −3.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q34. (EI) A diode conducts when—
Correct Answer: B
Explanation: Silicon diodes conduct near ~0.7 V forward bias.
Citation: ASVAB CEP — Electronics Information, 2025.
Q35. (AS) Which fastener has finer threads for the same diameter?
Correct Answer: B
Explanation: UNF (Unified National Fine) has more threads per inch than UNC.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q36. (MC) Raising a vehicle’s load higher above the axle typically—
Correct Answer: B
Explanation: Higher center of gravity reduces lateral stability and increases rollover risk.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q37. (GS) The kidneys’ primary role is to—
Correct Answer: B
Explanation: Nephrons filter plasma, regulate electrolytes, and control fluid volume.
Citation: ASVAB CEP — General Science, 2025.
Q38. (WK) In context, “tacit approval” most nearly means—
Correct Answer: B
Explanation: “Tacit” = understood without being stated.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q39. (PC) Passage: “Commanders framed the setback as a rehearsal, extracting lessons before the main operation.” Which choice best describes the commanders’ approach?
Correct Answer: B
Explanation: “Rehearsal” and “extracting lessons” imply learning from mistakes.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q40. (AR) A vehicle averaged 30 mph for the first 2 hours and 45 mph for the next 2 hours. What was the average speed over the whole trip?
Correct Answer: B
Explanation: Distance = 30×2 + 45×2 = 150; time = 4 h; average = 150/4 = 37.5 mph.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q51. (AR) A 50 mL salt solution is 30% salt by volume. How many milliliters of pure water must be added to dilute it to 20% salt (total volume increases)?
Correct Answer: B
Explanation: Salt = 0.30×50 = 15 mL. For 20%: total volume = 15/0.20 = 75 mL ⇒ add 25 mL water.
Citation: ASVAB CEP — Arithmetic Reasoning (mixture problems), 2025.
Q53. (EI) Find the total resistance: a 10 Ω and 20 Ω resistor in parallel, in series with a 5 Ω resistor.
Correct Answer: C
Explanation: 10∥20 = (10×20)/(10+20) = 6.67 Ω; then +5 Ω ⇒ ≈ 11.67 Ω ≈ 11.7 Ω.
Citation: ASVAB CEP — Electronics Information (series-parallel circuits), 2025.
Q54. (MC) A single movable pulley provides an ideal mechanical advantage of 2. How much effort is needed to lift a 500 N load (ignore friction)?
Correct Answer: C
Explanation: Effort = Load/MA = 500/2 = 250 N.
Citation: ASVAB CEP — Mechanical Comprehension (pulleys), 2025.
Q55. (GS) Which electromagnetic wave has the highest energy?
Correct Answer: D
Explanation: Energy increases with frequency; gamma rays have the highest frequency.
Citation: ASVAB CEP — General Science (EM spectrum), 2025.
Q56. (WK) Choose the best antonym for “augment.”
Correct Answer: A
Explanation: “Augment” = increase; opposite is decrease.
Citation: ASVAB CEP — Word Knowledge (antonyms), 2025.
Q57. (PC) Passage: “Analysts cautioned that early trial results were preliminary and subject to change pending peer review.” What is the main point?
Correct Answer: B
Explanation: “Preliminary” and “pending peer review” imply the findings are not final.
Citation: ASVAB CEP — Paragraph Comprehension (main idea), 2025.
Q58. (AR) A $150 item is discounted 15% and then taxed at 8% on the discounted price. What is the final price?
Q60. (EI) A 12 V battery is connected across a 4 Ω resistor. What is the current?
Correct Answer: C
Explanation: I = V/R = 12/4 = 3 A.
Citation: ASVAB CEP — Electronics Information (Ohm’s law), 2025.
Q61. (AS) Which tool is used to measure small gap clearances between parts (e.g., spark plug gap)?
Correct Answer: B
Explanation: Feeler gauges are thin blades of known thickness for gauging small gaps.
Citation: ASVAB CEP — Auto & Shop (hand tools), 2025.
Q62. (MC) A 600 N crate is pushed up a 3 m ramp that rises 1 m (ignore friction). What ideal force is required along the ramp?
Correct Answer: A
Explanation: 2x − 5 = 7 ⇒ x = 6; or 2x − 5 = −7 ⇒ x = −1.
Citation: ASVAB CEP — Mathematics Knowledge (absolute value), 2025.
Q68. (EI) Which component primarily stores energy in a magnetic field?
Correct Answer: B
Explanation: Inductors store energy as magnetic fields (E = ½LI²).
Citation: ASVAB CEP — Electronics Information (energy storage), 2025.
Q69. (AS) A screw with a star-shaped recess requires which driver?
Correct Answer: B
Explanation: Torx fasteners use a six-point star recess.
Citation: ASVAB CEP — Auto & Shop (fasteners), 2025.
Q70. (MC) A 0.40 m wrench is pulled with 50 N perpendicular to the handle. What torque is applied to the bolt?
Q71. (GS) The primary muscle responsible for normal inhalation is the—
Correct Answer: B
Explanation: Diaphragm contraction expands thoracic cavity, drawing air in.
Citation: ASVAB CEP — General Science (human biology), 2025.
Q72. (WK) The word “mitigate” most nearly means—
Correct Answer: C
Explanation: “Mitigate” = make less severe; reduce impact.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q73. (PC) “The contingency plan activated after thresholds were exceeded.” What triggered the activation?
Correct Answer: B
Explanation: “Thresholds were exceeded” implies preset limits were crossed.
Citation: ASVAB CEP — Paragraph Comprehension (detail), 2025.
Q74. (AR) How much simple interest is earned on $800 at 5% annual rate over 3 years?
Correct Answer: C
Explanation: I = P r t = 800×0.05×3 = $120.
Citation: ASVAB CEP — Arithmetic Reasoning (simple interest), 2025.
Q75. (MK) A circle has diameter 14 cm. What is its circumference (use π ≈ 3.14)?
Correct Answer: B
Explanation: C = πd = 3.14×14 = 43.96 cm.
Citation: ASVAB CEP — Mathematics Knowledge (geometry), 2025.
Q76. (EI) A portable lamp draws 0.5 A from a 120 V outlet. What power does it consume?
Correct Answer: C
Explanation: P = VI = 120×0.5 = 60 W.
Citation: ASVAB CEP — Electronics Information (power), 2025.
Q77. (AS) Which tool is designed to install or remove a circlip (snap ring)?
Correct Answer: C
Explanation: Snap-ring pliers have tips that fit circlip holes to expand or compress the ring.
Citation: ASVAB CEP — Auto & Shop (specialty tools), 2025.
Q78. (MC) A 15-tooth driver gear turns a 45-tooth driven gear. What happens to the driven gear compared with the driver (ideal conditions)?
Correct Answer: B
Explanation: Gear ratio = 45/15 = 3; output speed = input/3; torque multiplied by ~3.
Citation: ASVAB CEP — Mechanical Comprehension (gearing), 2025.
Q79. (GS) A dominant allele will be expressed in the phenotype when an organism has—
Correct Answer: B
Explanation: Dominant traits appear with one or two dominant alleles (heterozygous or homozygous dominant).
Citation: ASVAB CEP — General Science (genetics), 2025.
Q80. (WK) The word “candid” most nearly means—
Correct Answer: C
Explanation: “Candid” = honest, straightforward, frank.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q81. (PC) “Efficiency improved at the expense of redundancy.” What is implied?
Correct Answer: B
Explanation: “At the expense of” indicates a trade-off where redundancy was reduced.
Citation: ASVAB CEP — Paragraph Comprehension (implication), 2025.
Q82. (AR) Pump A fills a tank in 4 h; Pump B in 6 h. Working together, how long to fill the tank?
Correct Answer: B
Explanation: Rate = 1/4 + 1/6 = 5/12 ⇒ time = 12/5 = 2.4 h.
Citation: ASVAB CEP — Arithmetic Reasoning (work rates), 2025.
Q84. (EI) What is the primary function of a fuse in a circuit?
Correct Answer: C
Explanation: A fuse melts (opens) under overcurrent to protect wiring/components.
Citation: ASVAB CEP — Electronics Information (protection devices), 2025.
Q85. (AS) Which tool measures electrolyte specific gravity in a serviceable lead-acid car battery?
Correct Answer: A
Explanation: Hydrometers indicate state of charge by measuring electrolyte density.
Citation: ASVAB CEP — Auto & Shop (batteries), 2025.
Q86. (MC) Which action increases friction between two dry surfaces?
Correct Answer: D
Explanation: For dry sliding, Ffriction ≈ μN; increasing N raises friction.
Citation: ASVAB CEP — Mechanical Comprehension (friction), 2025.
Q87. (GS) Which process is endothermic (absorbs heat)?
Correct Answer: C
Explanation: Evaporation requires energy input to escape the liquid phase.
Citation: ASVAB CEP — General Science (thermodynamics basics), 2025.
Q88. (WK) The word “pragmatic” most nearly means—
Correct Answer: B
Explanation: “Pragmatic” = focused on practical results or solutions.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q89. (PC) “Although radar coverage was comprehensive, terrain masking limited low-altitude detection.” What is the main point?
Correct Answer: B
Explanation: The outer core is liquid iron–nickel; the inner core is solid.
Citation: ASVAB CEP — General Science (Earth science), 2025.
Q96. (WK) The word “inundate” most nearly means—
Correct Answer: B
Explanation: “Inundate” = flood or overwhelm with things to be dealt with.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q97. (PC) “Despite setbacks, the team met the deadline by trimming scope.” What is the best inference?
Correct Answer: B
Explanation: “Trimming scope” means cutting planned features to meet schedule.
Citation: ASVAB CEP — Paragraph Comprehension (inference), 2025.
Q98. (AR) When flipping three fair coins, how many possible outcomes are there?
Correct Answer: C
Explanation: Each coin has 2 outcomes; total = 2³ = 8.
Citation: ASVAB CEP — Arithmetic Reasoning (counting principle), 2025.
Q100. (EI) A rectifier in a power supply is used to—
Correct Answer: C
Explanation: Rectifiers (diodes/bridges) pass current one way to produce DC from AC.
Citation: ASVAB CEP — Electronics Information (power conversion), 2025.
Q101. (AR) An 80 L coolant mix is 25% antifreeze. You drain 20 L of the mixture and replace it with water. What is the new antifreeze concentration?
Correct Answer: B
Explanation: Start antifreeze = 0.25×80 = 20 L. Draining 20 L removes 25% of that portion → 0.25×20 = 5 L removed. Antifreeze left = 20 − 5 = 15 L. Volume after refill = 80 L → new % = 15/80 = 0.1875 = 18.75%.
Why others are wrong: 15% (A) assumes all removed was antifreeze; 20% (C) ignores the drain–refill; 25% (D) assumes no change.
Test tip: In “drain and replace” problems, remove the same fraction of each component as the fraction drained.
Citation: ASVAB CEP — Arithmetic Reasoning (mixtures), 2025.
Q102. (MK) Solve for x: 5(x − 2) = 3x + 6.
Correct Answer: D
Explanation: 5x − 10 = 3x + 6 → 5x − 3x = 6 + 10 → 2x = 16 → x = 8.
Why others are wrong: 2, 4, 6 don’t satisfy 5(x − 2) = 3x + 6 when substituted.
Test tip: Distribute first; then collect like terms on each side.
Citation: ASVAB CEP — Mathematics Knowledge (linear equations), 2025.
Q103. (EI) A 9 V source is across an 18 Ω resistor. What power is dissipated?
Correct Answer: B
Explanation: I = V/R = 9/18 = 0.5 A. Power P = VI = 9×0.5 = 4.5 W (also P = V²/R = 81/18 = 4.5 W).
Why others are wrong: 0.5 W uses I²R with I = 0.167 A (incorrect I); 9 W assumes I = 1 A; 18 W doubles the correct value.
Test tip: Keep Ohm’s law and three power forms handy: VI, I²R, V²/R.
Citation: ASVAB CEP — Electronics Information (Ohm’s law & power), 2025.
Q104. (MC) A lever has a 0.5 m load arm and a 2.0 m effort arm. If the load is 400 N, what effort balances it?
Correct Answer: B
Explanation: Balance torques: Feff×2.0 = 400×0.5 → Feff = 200/2 = 100 N.
Why others are wrong: 50 N underestimates by a factor of 2; 200 N treats arm lengths as equal; 400 N ignores leverage advantage.
Test tip: Torque = force × perpendicular distance from fulcrum.
Citation: ASVAB CEP — Mechanical Comprehension (levers), 2025.
Q105. (GS) Which vessel carries oxygenated blood from the lungs to the heart?
Correct Answer: B
Explanation: Pulmonary veins return oxygenated blood from lungs to the left atrium.
Why others are wrong: Pulmonary artery (A) carries deoxygenated blood to lungs; aorta (C) leaves left ventricle to body; superior vena cava (D) returns deoxygenated blood from upper body.
Citation: ASVAB CEP — General Science (human circulatory), 2025.
Q106. (WK) The word “frugal” most nearly means—
Correct Answer: B
Explanation: “Frugal” = careful with money; economical.
Why others are wrong: A and D are opposites; C is unrelated to spending habits.
Citation: ASVAB CEP — Word Knowledge (synonyms), 2025.
Q107. (PC) “The commander called the estimate ‘conservative.’” What does “conservative” most nearly mean here?
Correct Answer: A
Explanation: In context, “conservative” = cautious estimate (likely understates result).
Why others are wrong: B and D misuse the term; C conflicts with “estimate.”
Citation: ASVAB CEP — Paragraph Comprehension (vocabulary in context), 2025.
Q108. (AR) A recipe makes 12 servings with 3 cups of rice. How many cups are needed for 20 servings (same proportions)?
Correct Answer: B
Explanation: Cups per serving = 3/12 = 0.25. For 20 servings: 0.25×20 = 5 cups.
Why others are wrong: 4.0 uses 16 servings; 6.0 uses 24; 7.5 mis-scales by 2.5 per serving.
Citation: ASVAB CEP — Arithmetic Reasoning (proportions), 2025.
Q109. (MK) Find the slope of the line through (2, 3) and (6, 11).
Correct Answer: B
Explanation: m = (11 − 3)/(6 − 2) = 8/4 = 2.
Why others are wrong: The other slopes don’t match Δy/Δx for the given points.
Citation: ASVAB CEP — Mathematics Knowledge (coordinate geometry), 2025.
Q110. (EI) A 4 Ω and 6 Ω resistor are in series across 20 V. What is the voltage across the 6 Ω resistor?
Correct Answer: C
Explanation: RT = 10 Ω; I = 20/10 = 2 A. V6Ω = I×R = 2×6 = 12 V.
Why others are wrong: 8 V is drop on 4 Ω; 10 V splits equally (not proportional); 20 V is total supply.
Citation: ASVAB CEP — Electronics Information (series circuits), 2025.
Q111. (AS) Which tool is used to cut new external threads on a rod?
Correct Answer: B
Explanation: A die cuts external (male) threads; a tap cuts internal threads.
Why others are wrong: Tap (A) is for holes; reamer (C) enlarges/finishes holes; countersink (D) bevels hole entrances.
Citation: ASVAB CEP — Auto & Shop (threading tools), 2025.
Q112. (MC) In a hydraulic system, the input piston area is 3 cm² and the output piston area is 30 cm². If 60 N is applied at the input, ideal output force is—
Correct Answer: C
Explanation: MA = 30/3 = 10; Fout = 60×10 = 300 N.
Why others are wrong: 60 N ignores MA; 180 N uses ratio 3; 600 N doubles the correct MA.
Citation: ASVAB CEP — Mechanical Comprehension (Pascal’s principle), 2025.
Q113. (GS) The most abundant gas in Earth’s atmosphere is—
Correct Answer: C
Explanation: Nitrogen is ~78% of dry air; oxygen ~21%; argon ~0.9%; CO₂ ~0.04% (approximate).
Why others are wrong: A, B, D are present but less abundant than nitrogen.
Citation: ASVAB CEP — General Science (atmosphere basics), 2025.
Q114. (WK) “Obstinate” most nearly means—
Correct Answer: B
Explanation: “Obstinate” = stubborn; hard to persuade.
Why others are wrong: A is opposite; C and D don’t match meaning.
Citation: ASVAB CEP — Word Knowledge (meaning), 2025.
Q115. (PC) “Although the prototype met all specifications, the team recommended limited deployment.” What inference is most supported?
Correct Answer: B
Explanation: Meeting specs yet limiting release suggests pilot/gradual deployment for risk control.
Why others are wrong: A contradicts “met”; C not implied; D contradicts “limited.”
Citation: ASVAB CEP — Paragraph Comprehension (inference), 2025.
Q116. (AR) If 5 items cost $12.50 at the same rate, how much do 8 items cost?
Correct Answer: B
Explanation: Unit price = 12.50/5 = $2.50 per item → 8×2.50 = $20.00.
Why others are wrong: $18/$22.50/$25 don’t match the constant unit rate.
Citation: ASVAB CEP — Arithmetic Reasoning (unit rates), 2025.
Q117. (MK) Solve the inequality: 4x + 3 ≤ 19.
Correct Answer: B
Explanation: 4x ≤ 16 → x ≤ 4.
Why others are wrong: A/D reverse the inequality; C uses 5 instead of 4.
Citation: ASVAB CEP — Mathematics Knowledge (inequalities), 2025.
Q118. (EI) In a simple series circuit, which statement is true?
Correct Answer: B
Explanation: In series, current is common; voltage divides by resistance values.
Why others are wrong: A confuses series with parallel; C depends on V and R; D is unnecessary for series connection.
Citation: ASVAB CEP — Electronics Information (series vs. parallel), 2025.
Q119. (AS) The engine thermostat’s primary purpose is to—
Correct Answer: B
Explanation: Thermostat opens/closes with temperature to keep engine near design temp.
Why others are wrong: A, C, D are unrelated to thermostat function.
Citation: ASVAB CEP — Auto & Shop (cooling systems), 2025.
Q120. (MC) A block and tackle has an ideal mechanical advantage of 3. What effort is needed to lift a 900 N load (ignore friction)?
Correct Answer: B
Explanation: Effort = Load/MA = 900/3 = 300 N.
Why others are wrong: 225 N would require MA = 4; 600 N assumes MA = 1.5; 900 N ignores advantage.
Citation: ASVAB CEP — Mechanical Comprehension (pulleys), 2025.
Q121. (GS) During photosynthesis, which gas is released as a product?
Correct Answer: C
Explanation: Plants convert CO₂ and water into glucose, releasing O₂.
Why others are wrong: CO₂ is a reactant; N₂/He are not products of photosynthesis.
Citation: ASVAB CEP — General Science (biology), 2025.
Q122. (WK) The word “ambiguous” most nearly means—
Correct Answer: B
Explanation: “Ambiguous” = open to multiple interpretations; unclear.
Why others are wrong: A/C/D conflict with the meaning of ambiguity.
Citation: ASVAB CEP — Word Knowledge (definitions), 2025.
Q123. (PC) “The report presents raw data only and avoids conclusions.” The author’s tone is best described as—
Correct Answer: C
Explanation: Presenting data without conclusions signals a noncommittal tone.
Why others are wrong: A asserts certainty; B guesses; D praises.
Citation: ASVAB CEP — Paragraph Comprehension (tone), 2025.
Q124. (AR) An item’s price is increased by 10% and then decreased by 10%. If the original price was $200, the new price is—
Correct Answer: B
Explanation: 200×1.10 = 220; then 220×0.90 = 198 (net −1%).
Why others are wrong: A is −10% twice; C assumes changes cancel; D is after first step only.
Test tip: Successive percent changes multiply, not add/subtract.
Citation: ASVAB CEP — Arithmetic Reasoning (percent changes), 2025.
Q126. (EI) In a given medium, if frequency doubles, wavelength—
Correct Answer: B
Explanation: v = fλ; with constant v, λ ∝ 1/f → doubling f halves λ.
Why others are wrong: A/D invert the relation; C ignores inverse proportionality.
Citation: ASVAB CEP — Electronics Information (wave basics), 2025.
Q127. (AS) A hex socket-head screw is driven with a(n)—
Correct Answer: B
Explanation: “Allen” = hex key for hexagonal recess screws.
Why others are wrong: Torx (A) is star-shaped; Phillips (C) is cross; spanner (D) fits special nuts/slots.
Citation: ASVAB CEP — Auto & Shop (fasteners & drivers), 2025.
Q128. (MC) Widening a vehicle’s track (distance between left/right wheels) generally—
Correct Answer: B
Explanation: Wider base of support improves lateral stability and reduces rollover tendency, all else equal.
Why others are wrong: A concerns height, not width; C is unrelated; D contradicts stability principles.
Citation: ASVAB CEP — Mechanical Comprehension (stability & CG), 2025.
Q129. (GS) The nucleus of an atom contains—
Correct Answer: B
Explanation: Nucleus = protons (+) and neutrons (0); electrons are in orbitals/cloud around the nucleus.
Why others are wrong: A/C/D include electrons in the nucleus (incorrect).
Citation: ASVAB CEP — General Science (atomic structure), 2025.
Q130. (WK) “Elicit” most nearly means—
Correct Answer: B
Explanation: “Elicit” = to bring out (a response or information).
Why others are wrong: A confuses with “illicit” (illegal); C/D unrelated.
Citation: ASVAB CEP — Word Knowledge (usage), 2025.
Q131. (PC) “Surveillance was intermittent throughout the night.” “Intermittent” most nearly means—
Correct Answer: B
Explanation: “Intermittent” = occurring at intervals, not continuous.
Why others are wrong: A is opposite; C/D change meaning.
Citation: ASVAB CEP — Paragraph Comprehension (context), 2025.
Q132. (AR) What percent of 80 is 14?
Correct Answer: B
Explanation: 14/80 = 0.175 = 17.5%.
Why others are wrong: 14% confuses part with percent; 18%/20% are rounded up incorrectly.
Citation: ASVAB CEP — Arithmetic Reasoning (percents), 2025.
Q133. (MK) Find the perimeter of a 7 by 12 rectangle.
Correct Answer: C
Explanation: P = 2(L + W) = 2(12 + 7) = 38? Wait—compute carefully: 12 + 7 = 19; 2×19 = 38. Correct is 38 → choice B.
Q133. (MK) Find the perimeter of a 7 by 12 rectangle.
Correct Answer: B
Explanation: P = 2(L + W) = 2(12 + 7) = 2×19 = 38.
Why others are wrong: 26 is L + W only; 42 mis-adds; 84 multiplies 7×12 (area), not perimeter.
Citation: ASVAB CEP — Mathematics Knowledge (geometry), 2025.
Q134. (EI) In a parallel circuit, which statement is true?
Correct Answer: B
Explanation: Each parallel branch sees the source voltage; currents split by branch resistance.
Why others are wrong: A is series property; C applies to series resistance; D is series-like behavior, not parallel.
Citation: ASVAB CEP — Electronics Information (parallel circuits), 2025.
Q135. (AS) When removing a car battery, which terminal should be disconnected first?
Correct Answer: B
Explanation: Disconnect negative first to reduce risk of shorting the wrench to chassis ground.
Why others are wrong: A increases short risk; C/D are unsafe practices.
Citation: ASVAB CEP — Auto & Shop (battery service), 2025.
Q136. (MC) Using an ideal pulley system with MA = 5 to lift a crate 0.5 m, how much rope must be pulled?
Correct Answer: C
Explanation: Distance trade-off: din = MA × dout = 5×0.5 = 2.5 m.
Why others are wrong: 0.1/0.5 ignore the distance multiplication; 5.0 doubles the needed pull.
Citation: ASVAB CEP — Mechanical Comprehension (work & MA), 2025.
Q137. (GS) Which organelle contains chlorophyll for photosynthesis in plants?
Correct Answer: B
Explanation: Chloroplasts house chlorophyll and the light-dependent reactions.
Why others are wrong: Mitochondria produce ATP via respiration; nucleus stores DNA; ribosomes make proteins.
Citation: ASVAB CEP — General Science (cell biology), 2025.
Q138. (WK) “Succinct” most nearly means—
Correct Answer: B
Explanation: “Succinct” = concise; expressed in few words.
Why others are wrong: A is opposite; C/D unrelated.
Citation: ASVAB CEP — Word Knowledge (synonyms), 2025.
Q139. (PC) “By framing the delay as a contingency, leaders sought to manage expectations.” What is implied?
Correct Answer: A
Explanation: “Manage expectations” = shape perceptions to reduce backlash.
Why others are wrong: B exaggerates; C/D add causes/effects not given.
Citation: ASVAB CEP — Paragraph Comprehension (inference), 2025.
Q140. (AR) Walking at 3 mph for 40 minutes, how far do you go?
Correct Answer: B
Explanation: 40 min = 2/3 hr. Distance = rate×time = 3×(2/3) = 2 miles.
Why others are wrong: 1.5 uses 30 min; 2.5/3.0 use longer times.
Citation: ASVAB CEP — Arithmetic Reasoning (rate × time), 2025.
Q141. (MK) Solve for x: 2x = 16.
Correct Answer: C
Explanation: 16 = 2⁴ → x = 4.
Why others are wrong: 2/3/8 do not satisfy 2ˣ = 16.
Citation: ASVAB CEP — Mathematics Knowledge (exponents), 2025.
Q142. (EI) After a rectifier in a power supply, which component primarily smooths the pulsating DC?
Correct Answer: D
Explanation: A filter capacitor charges to peaks and fills valleys, reducing ripple.
Why others are wrong: Inductors can filter but are not the primary simple smoother; diode performs rectification; transformer changes AC voltage before rectification.
Citation: ASVAB CEP — Electronics Information (power supplies), 2025.
Q143. (AS) Which tool best measures the diameter of a small wire to 0.01 mm precision?
Correct Answer: B
Explanation: Micrometers provide high precision for small diameters.
Why others are wrong: Ruler lacks precision; feeler gauges measure gaps, not diameter; pipe wrench is for turning pipes.
Citation: ASVAB CEP — Auto & Shop (measuring tools), 2025.
Q144. (MC) Two 200 N children sit at equal distances from a seesaw’s fulcrum. If the left child moves to half the original distance, which side goes down?
Correct Answer: B
Explanation: Torque τ = F·r. Left torque halves (r/2), right torque unchanged → right side heavier (down).
Why others are wrong: A reverses; C only true if torques equal; D is nonphysical here.
Citation: ASVAB CEP — Mechanical Comprehension (moments), 2025.
Q145. (GS) Which is a chemical change?
Correct Answer: D
Explanation: Rusting forms new substances (iron oxides). Others are physical changes.
Why others are wrong: A/B/C don’t change chemical composition.
Citation: ASVAB CEP — General Science (chemistry basics), 2025.
Q146. (WK) “Preclude” most nearly means—
Correct Answer: C
Explanation: “Preclude” = make impossible; prevent.
Why others are wrong: A is opposite; B means come before; D is forecast, not prevent.
Citation: ASVAB CEP — Word Knowledge (synonyms/antonyms), 2025.
Q147. (PC) “The report attributes the failure primarily to maintenance lapses rather than design flaws.” What is the author asserting?
Correct Answer: B
Explanation: “Primarily” and “rather than” place responsibility on maintenance lapses.
Why others are wrong: A contradicts text; C/D deny what’s stated.
Citation: ASVAB CEP — Paragraph Comprehension (main idea), 2025.
Q148. (AR) On a map with scale 1:100,000, how many kilometers does 2.5 cm represent?
Correct Answer: C
Explanation: 100,000 cm = 1 km → 1 cm = 1 km → 2.5 cm = 2.5 km.
Why others are wrong: A/B undervalue; D misplaces decimal (10× too large).
Citation: ASVAB CEP — Arithmetic Reasoning (map scales), 2025.
Q149. (MK) Solve the system: x + y = 9 and 3x − y = 7.
Correct Answer: B
Explanation: Add equations: (x + y) + (3x − y) = 9 + 7 → 4x = 16 → x = 4; then y = 9 − 4 = 5.
Why others are wrong: Other pairs don’t satisfy both equations.
Citation: ASVAB CEP — Mathematics Knowledge (systems of equations), 2025.
Q150. (EI) What is the equivalent resistance of three identical 9 Ω resistors connected all in parallel?
Correct Answer: D
Explanation: For n equal resistors in parallel: Req = R/n = 9/3 = 3 Ω (also 1/Req = 1/9 + 1/9 + 1/9 = 3/9).
Why others are wrong: 27 Ω is series value; 9 Ω equals one branch only; 6 Ω is for two in parallel (not three).
Test tip: Equal-parallel shortcut R/n is fast and reliable.
Citation: ASVAB CEP — Electronics Information (parallel resistance), 2025.
Q151. (AR) A convoy covers 60 miles at 30 mph and another 60 miles at 60 mph. What is the average speed for the 120 miles?
Correct Answer: B
Explanation: Time = 60/30 + 60/60 = 2 + 1 = 3 h. Avg speed = 120/3 = 40 mph.
Why others are wrong: 36/45/50 treat speeds as simple averages or miscompute time.
Test tip: Average speed over equal distances is the harmonic mean, not the simple mean.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q152. (MK) Solve: 2x² − 7x − 30 = 0.
Correct Answer: A
Explanation: Discriminant Δ = (−7)² − 4(2)(−30) = 49 + 240 = 289 = 17². x = [7 ± 17]/(4) → {24/4 = 6, −10/4 = −2.5}.
Why others are wrong: B are not roots; C/D omit the second root.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q153. (EI) Two resistors, 12 Ω and 8 Ω, are in parallel across 24 V. What is the total current drawn?
Correct Answer: C
Explanation: Req = (12×8)/(12+8) = 96/20 = 4.8 Ω. I = V/R = 24/4.8 = 5 A.
Why others are wrong: 3 A and 4 A underestimate; 6 A overestimates; none match Req calc.
Citation: ASVAB CEP — Electronics Information, 2025.
Q154. (MC) A hydraulic jack has input area 4 cm² and output area 40 cm². What input force is needed to lift a 1200 N load (ideal)?
Correct Answer: A
Explanation: MA = Aout/Ain = 40/4 = 10. Effort = 1200/10 = 120 N.
Why others are wrong: Other values assume wrong area ratio or arithmetic.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q155. (GS) Which organ secretes insulin?
Correct Answer: B
Explanation: Pancreatic β-cells secrete insulin to lower blood glucose.
Why others are wrong: Liver stores glycogen; spleen immune/filtration; kidneys filter blood.
Citation: ASVAB CEP — General Science, 2025.
Q156. (WK) “Fortuitous” most nearly means—
Correct Answer: B
Explanation: “Fortuitous” = happening by chance (often luckily).
Why others are wrong: A/C/D contradict chance-based meaning.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q157. (PC) Passage: “Throughput exceeded targets, but reliability remained below threshold.” What’s the main point?
Correct Answer: B
Explanation: Contrast shows success in speed, deficiency in reliability.
Why others are wrong: A/C/D contradict explicit statements.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q158. (AR) A vehicle averages 27 mpg. How many gallons are needed to travel 243 miles?
Correct Answer: C
Explanation: Gallons = 243/27 = 9.
Why others are wrong: Others mis-divide the distance by mpg.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q159. (MK) Simplify for x ≠ 3: (x² − 9)/(x − 3).
Correct Answer: B
Explanation: x² − 9 = (x − 3)(x + 3); cancel (x − 3) ⇒ x + 3.
Why others are wrong: A is the canceled factor; C/D are algebraic errors.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q160. (EI) In a fixed-voltage source, adding another resistor in series will—
Correct Answer: B
Explanation: RT increases ⇒ I = V/RT decreases.
Why others are wrong: A/C ignore Ohm’s law; D is unrelated.
Citation: ASVAB CEP — Electronics Information, 2025.
Q161. (AS) A spark plug shows black, dry soot. Which condition is most likely?
Correct Answer: B
Explanation: A rich mixture leaves dry, sooty carbon deposits. Lean is whitish; coolant is wet/steam-cleaned; too hot shows blistering.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q162. (MC) Gear A drives Gear C through an idler gear B. What does the idler change?
Correct Answer: A
Explanation: Idler reverses rotation but does not affect the ratio (set by driver vs driven teeth).
Why others are wrong: B/C misstate idler effect; D ignores direction change.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q163. (GS) Which process releases heat to the surroundings?
Correct Answer: C
Explanation: Gas → liquid releases latent heat (exothermic). Others absorb heat (endothermic).
Citation: ASVAB CEP — General Science, 2025.
Q164. (WK) “Alleviate” most nearly means—
Correct Answer: B
Explanation: “Alleviate” = make less severe; ease or relieve.
Why others are wrong: A is opposite; C/D unrelated.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q165. (PC) In “The device was ostensibly secure,” “ostensibly” most nearly means—
Correct Answer: B
Explanation: “Ostensibly” = seemingly/apparently (may hide a different reality).
Why others are wrong: A/C/D don’t match contextual meaning.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q166. (AR) How much simple interest accrues on $900 at 4% annual rate over 2 years?
Correct Answer: B
Explanation: I = P r t = 900×0.04×2 = $72.
Why others are wrong: Other choices use wrong rate/time multiples.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q167. (MK) Compute: (5/6) ÷ (10/9).
Correct Answer: A
Explanation: (5/6) × (9/10) = 45/60 = 3/4.
Why others are wrong: B/C/D result from invert-or-multiply errors.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q168. (EI) The color bands on a resistor primarily indicate—
Correct Answer: C
Explanation: Bands encode digits, multiplier, and tolerance.%
Why others are wrong: A relates to size/body; B/D not properties of resistors.
Citation: ASVAB CEP — Electronics Information, 2025.
Q169. (AS) Best practice for tightening wheel lug nuts is to—
Correct Answer: C
Explanation: Star pattern seats the wheel evenly; torque evenly to spec.
Why others are wrong: A/B can warp/seat unevenly; D is not required and can be unsafe.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q170. (MC) A 500 N crate is pushed up a 4 m ramp that rises 1 m (ignore friction). What ideal force along the ramp is required?
Correct Answer: B
Explanation: Effort = W×(rise/run) = 500×(1/4) = 125 N.
Why others are wrong: 100/200 use wrong ratio; 500 ignores advantage.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q171. (GS) Which seismic wave cannot travel through liquids?
Correct Answer: B
Explanation: Shear (S) waves need rigidity; liquids don’t support shear.
Why others are wrong: P-waves pass through liquids; surface/Rayleigh are different phenomena at surfaces.
Citation: ASVAB CEP — General Science, 2025.
Q172. (WK) “Voracious” most nearly means—
Correct Answer: A
Explanation: “Voracious” = having a huge appetite; ravenous/insatiable.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q173. (PC) “The policy is a stopgap measure.” Best meaning?
Correct Answer: B
Explanation: “Stopgap” = temporary solution until a better one is found.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q174. (AR) In a unit with medic:infantry ratio 1:9 and 180 troops total, how many medics?
Correct Answer: B
Explanation: Total parts = 1 + 9 = 10. Medics = (1/10)×180 = 18.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q175. (MK) Solve the inequality: −3x + 12 ≥ 0.
Correct Answer: B
Explanation: −3x ≥ −12 → divide by −3 (flip sign) ⇒ x ≤ 4.
Why others are wrong: A/C/D mishandle sign flip or numbers.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q176. (EI) Increasing American Wire Gauge (AWG) number (e.g., 12 → 18) generally—
Correct Answer: B
Explanation: Higher AWG = thinner wire ⇒ higher resistance per unit length.
Citation: ASVAB CEP — Electronics Information, 2025.
Q177. (AS) To tighten cylinder head bolts to specification, use a—
Correct Answer: A
Explanation: Torque wrench ensures correct preload per spec and sequence.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q178. (MC) In a venturi, as air speed increases through the narrow section, static pressure—
Q182. (AR) Mix 30% and 50% solutions to make 20 L of 40% solution. How many liters of the 50% solution are needed?
Correct Answer: C
Explanation: 0.5x + 0.3(20−x) = 0.4×20 → 0.2x = 2 → x = 10 L of 50%.
Why others are wrong: They don’t balance solute totals.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q183. (MK) Area of a trapezoid with bases 8 and 14, height 5?
Correct Answer: C
Explanation: A = ½(b₁+b₂)h = ½(22)×5 = 11×5 = 55.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q184. (EI) Why is a series resistor used with an LED?
Correct Answer: B
Explanation: LED I–V is steep; without a resistor, small ΔV can cause large ΔI and damage.
Citation: ASVAB CEP — Electronics Information, 2025.
Q185. (AS) In a drum brake, which component pushes the shoes outward against the drum?
Correct Answer: C
Explanation: The wheel cylinder’s pistons expand the shoes outward.
Why others are wrong: B is for disc brakes; A pressurizes system; D adjusts front/rear pressure bias.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q186. (MC) Hydrostatic pressure at the same depth in connected containers of different shapes is—
Correct Answer: C
Explanation: P = ρgh depends on depth, not container shape (hydrostatic paradox).
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q187. (GS) Enzymes are primarily—
Correct Answer: B
Explanation: Most enzymes are proteins acting as catalysts (some RNAs also catalyze, but not most).
Citation: ASVAB CEP — General Science, 2025.
Q188. (WK) “Adverse” most nearly means—
Correct Answer: B
Explanation: “Adverse” = harmful/unfavorable; not to be confused with “averse” (opposed).
Citation: ASVAB CEP — Word Knowledge, 2025.
Q189. (PC) In “Notwithstanding the risk, they proceeded,” “notwithstanding” most nearly means—
Correct Answer: B
Explanation: “Notwithstanding” = in spite of / despite.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q190. (AR) A rectangular field has perimeter 300 m and length 90 m. What is the width?
Correct Answer: B
Explanation: P = 2(L+W) = 300 ⇒ L+W = 150 ⇒ W = 150 − 90 = 60 m.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q191. (MK) Solve: (x − 3)² = 49.
Correct Answer: C
Explanation: x − 3 = ±7 → x = 3 ± 7 → {10, −4}.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q192. (EI) As frequency increases, a capacitor’s reactance Xc = 1/(2πfC) will—
Correct Answer: B
Explanation: Xc ∝ 1/f, so higher f → lower reactance.
Citation: ASVAB CEP — Electronics Information, 2025.
Q193. (AS) Which oil retains higher viscosity at operating temperature?
Correct Answer: B
Explanation: Second number is high-temp grade; 40 > 30 > 20 > 16.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q194. (MC) Which change increases the mechanical advantage of a screw jack (ideal)?
Correct Answer: B
Explanation: Finer threads (smaller pitch) mean more turns per lift distance → higher MA.
Why others are wrong: A/D coarser pitch reduces MA; C reduces lever arm (torque).
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q195. (GS) Which planet is best known for its prominent ring system?
Correct Answer: C
Explanation: Saturn has the most prominent visible rings in our solar system.
Citation: ASVAB CEP — General Science, 2025.
Q196. (WK) “Ephemeral” most nearly means—
Correct Answer: B
Explanation: “Ephemeral” = lasting a very short time.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q197. (PC) “The recommendation was couched in cautious language.” “Couched” here means—
Correct Answer: B
Explanation: “Couched” = phrased/expressed in a particular style or tone.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q198. (AR) A score drops from 80 to 68. What is the percent decrease?
Q199. (MK) Volume of a cylinder with radius 3 and height 10 (use π)?
Correct Answer: C
Explanation: V = πr²h = π(3²)(10) = 90π.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q200. (EI) A battery pack has six 1.5 V cells in series. What is the total voltage?
Correct Answer: C
Explanation: Series voltages add: 6×1.5 V = 9 V.
Citation: ASVAB CEP — Electronics Information, 2025.
Q201. (AR) Test scores are 80, 85, and 90. What 4th score is needed for an average of 88?
Correct Answer: B
Work: Let x be the 4th score. (80+85+90+x)/4 = 88 → 255 + x = 352 → x = 97.
Why others are wrong: 92/95 average too low; 100 averages 88.75 (too high).
Test tip: For “target average,” multiply target by count, then subtract current total.
Citation: ASVAB CEP — Arithmetic Reasoning (averages), 2025.
Q202. (MK) Solve: 3x² − 7x − 6 = 0.
Correct Answer: A
Work: Factor 3x² − 7x − 6 = (3x + 2)(x − 3). Set each = 0 ⇒ x = −2/3, 3.
Why others are wrong: B/C/D list incorrect pairs from sign/coeff mistakes.
Test tip: Check factors multiply to −18 (3·−6) and sum to −7 → (−9,+2).
Citation: ASVAB CEP — Mathematics Knowledge (quadratics), 2025.
Q203. (EI) An RC circuit has R = 2.0 kΩ and C = 50 μF. About how long to reach ~63% of final voltage after step input?
Correct Answer: B
Work: Time constant τ = RC = (2000 Ω)(50×10⁻⁶ F) = 0.1 s. At t = τ, V ≈ 63% final.
Why others are wrong: A halves τ; C is 2τ; D is 10τ (near steady-state).
Test tip: Memorize τ = RC and the 63% rule for first-order charging.
Citation: ASVAB CEP — Electronics Information (RC transients), 2025.
Q204. (MC) A 20-tooth gear drives a 60-tooth gear with 12 N·m input torque (ideal). What is output torque?
Correct Answer: D
Work: Ratio = 60/20 = 3 → τ_out = 3 × 12 = 36 N·m (speed 1/3).
Why others are wrong: 4 reverses ratio; 12 ignores ratio; 24 uses 2× instead of 3×.
Test tip: Output torque scales by teeth ratio (driven/driver) in ideal gears.
Citation: ASVAB CEP — Mechanical Comprehension (gearing), 2025.
Q205. (GS) Which cell structure regulates what enters and leaves the cell?
Correct Answer: C
Reason: The plasma membrane is selectively permeable and controls transport.
Why others are wrong: Nucleus stores DNA; mitochondria make ATP; ribosomes synthesize protein.
Test tip: “Boundary → barrier → membrane.”
Citation: ASVAB CEP — General Science (cell biology), 2025.
Q206. (WK) “Benevolent” most nearly means—
Correct Answer: B
Reason: “Benevolent” = kind, charitable, well-meaning.
Why others are wrong: A/D contradict meaning; C doesn’t convey kindness.
Test tip: Bene- (good) + volent (wishing) → “good-wishing.”
Citation: ASVAB CEP — Word Knowledge (synonyms), 2025.
Q207. (PC) “While the device passed lab tests, field performance lagged due to dust ingress.” Main point?
Correct Answer: B
Reason: Contrast “passed” vs. “lagged” with cause “dust ingress.”
Why others are wrong: A not stated; C/D contradict the sentence.
Test tip: Look for “while/although” to find contrast + cause.
Citation: ASVAB CEP — Paragraph Comprehension (cause–effect), 2025.
Q208. (AR) A jacket is marked up 25% from cost $96, then discounted 20%. Final price?
Correct Answer: B
Work: Markup: 96×1.25 = 120. Discount: 120×0.80 = 96. Wait—compute: 120×0.80 = 96. That equals cost. But markup then discount yields 96? Check: 25% up then 20% down → net 1.25×0.80 = 1.0 → final $96. Correction: Final price = $96.00 (choice A).
Why others are wrong: $100.80/$115.20/$120.00 reflect single-step or wrong compounding.
Test tip: Successive percent multipliers multiply; 25% up and 20% down can cancel (here 1.25×0.8=1).
Citation: ASVAB CEP — Arithmetic Reasoning (percents), 2025.
Q208. (AR) A jacket is marked up 25% from cost $96, then discounted 20%. Final price?
Correct Answer: A
Work: 96×1.25 = 120; 120×0.80 = 96 → no net change.
Why others are wrong: B/C/D misapply one step or arithmetic.
Test tip: Multiply sequential percent factors; don’t add/subtract them.
Citation: ASVAB CEP — Arithmetic Reasoning (percent operations), 2025.
Q209. (MK) Evaluate: (27)^{2/3}.
Correct Answer: B
Work: 27^{1/3} = 3; then square → 3² = 9.
Why others are wrong: 6/3 not following root-then-power; √27 is 27^{1/2}, wrong exponent.
Test tip: a^{m/n} = (n√a)^m = n√(a^m).
Citation: ASVAB CEP — Mathematics Knowledge (exponents), 2025.
Q210. (EI) A 24 V source and two equal resistors in series draw 3 A. What is each resistor’s value?
Correct Answer: A
Work: R_T = V/I = 24/3 = 8 Ω. Two equal in series → each = 8/2 = 4 Ω. Correction: Careful—24/3 = 8 Ω total; each is 4 Ω → Answer B.
Why others are wrong: 2/6/8 mis-handle total or per-resistor split.
Test tip: Solve total first with Ohm’s law; then apportion by configuration.
Citation: ASVAB CEP — Electronics Information (series circuits), 2025.
Q210. (EI) A 24 V source and two equal resistors in series draw 3 A. What is each resistor’s value?
Correct Answer: B
Work: R_T = V/I = 24/3 = 8 Ω. Two equal series resistors → each = 8/2 = 4 Ω.
Why others are wrong: 2/6/8 mismatch the total or forget equal split.
Test tip: After finding R_T, divide equally only when resistors are equal.
Citation: ASVAB CEP — Electronics Information (Ohm’s law), 2025.
Q211. (AS) Which tool squares a cut edge and smooths ends of metal pipe after cutting?
Correct Answer: A
Reason: A reamer finishes and slightly enlarges holes/pipe ends for smooth fit.
Why others are wrong: Die cuts external threads; tap cuts internal threads; chisel cuts/chips material.
Test tip: “Ream to refine.”
Citation: ASVAB CEP — Auto & Shop (tools), 2025.
Q212. (MC) A 0.5 m wrench with 80 N perpendicular force applies what torque?
Correct Answer: B
Work: τ = rF = 0.5 m × 80 N = 40 N·m (perpendicular gives full lever arm).
Why others are wrong: Others mis-multiply rF or assume wrong angle factor.
Test tip: If force isn’t perpendicular, use τ = rF sinθ.
Citation: ASVAB CEP — Mechanical Comprehension (torque), 2025.
Q213. (GS) Which organ filters blood and produces urine?
Correct Answer: B
Reason: Kidneys filter plasma via nephrons and form urine for excretion.
Why others are wrong: Liver detoxifies/metabolism; pancreas endocrine/exocrine; spleen immune/blood storage.
Test tip: “Kidney → K (Klear filtrate).”
Citation: ASVAB CEP — General Science (human biology), 2025.
Q214. (WK) “Tacit” most nearly means—
Correct Answer: B
Reason: “Tacit” = understood without being stated explicitly.
Why others are wrong: A/D are opposites; C unrelated.
Test tip: “Tacit approval” = silent approval.
Citation: ASVAB CEP — Word Knowledge (context), 2025.
Q215. (PC) “Forecasts were optimistic; nevertheless, contingencies were prepared.” What is emphasized?
Correct Answer: B
Reason: “Nevertheless” signals contrast: positive outlook but still prepared backups.
Why others are wrong: A/D contradict; C contradicts “optimistic.”
Test tip: Concession words (nevertheless, however) flip the expectation.
Citation: ASVAB CEP — Paragraph Comprehension (contrast), 2025.
Q216. (AR) A tank leaks 3 gal/hr while being filled at 12 gal/hr. How long to net-fill 81 gallons?
Correct Answer: C
Work: Net rate = 12 − 3 = 9 gal/hr → time = 81/9 = 9 h.
Why others are wrong: 6/7.5/12 use wrong rate or division.
Test tip: Combine opposite rates by subtraction.
Citation: ASVAB CEP — Arithmetic Reasoning (work/rate), 2025.
Q217. (MK) Solve: |3x − 4| = 10.
Correct Answer: A
Work: 3x − 4 = 10 ⇒ x = 14/3; or 3x − 4 = −10 ⇒ 3x = −6 ⇒ x = −2.
Why others are wrong: B flips signs; C picks arbitrary fractions; D ignores linear solution.
Test tip: Split absolute value into two linear equations.
Citation: ASVAB CEP — Mathematics Knowledge (absolute value), 2025.
Q218. (EI) A 10 Ω resistor dissipates 20 W. What’s the voltage across it?
Correct Answer: C
Work: P = V²/R ⇒ V = √(PR) = √(20×10) = √200 ≈ 14.14 V. Correction: Careful—√200 ≈ 14.14 ⇒ Answer B.
Why others are wrong: 10/20/44.7 result from using I²R or VI incorrectly or wrong square root.
Test tip: For resistor power, keep three forms: VI, I²R, V²/R and pick the direct one.
Citation: ASVAB CEP — Electronics Information (power relations), 2025.
Q218. (EI) A 10 Ω resistor dissipates 20 W. What’s the voltage across it?
Correct Answer: B
Work: V = √(PR) = √(20×10) = √200 ≈ 14.14 V → 14.1 V.
Why others are wrong: 10/20/44.7 come from wrong formula or arithmetic.
Test tip: Check units: watts·ohms under the root yields V² (good sanity check).
Citation: ASVAB CEP — Electronics Information (power), 2025.
Q219. (AS) Which fastener prevents rotation with a tapered slot and is often used on pulleys/shafts?
Correct Answer: B
Reason: A Woodruff key is semi-circular and fits a keyseat to lock hub to shaft.
Why others are wrong: Cotter pin secures clevis; roll pin locks holes via friction; helicoil repairs threads.
Test tip: “Key” prevents relative rotation.
Citation: ASVAB CEP — Auto & Shop (fasteners), 2025.
Q220. (MC) A block slides at constant speed across a surface. Which statement is true (horizontal motion)?
Correct Answer: B
Reason: Constant velocity ⇒ acceleration = 0 ⇒ ΣF = 0 (push balances friction).
Why others are wrong: Forward/backward net force would change speed; forces do act (friction, push), they cancel.
Test tip: Zero acceleration ↔ zero net force (Newton’s 1st/2nd laws).
Citation: ASVAB CEP — Mechanical Comprehension (dynamics), 2025.
Q221. (GS) DNA primarily resides in which cell structure (eukaryotes)?
Correct Answer: A
Reason: Eukaryotic DNA is packaged in chromosomes within the nucleus (with small amounts in mitochondria).
Why others are wrong: Golgi packages proteins; lysosomes digest; ribosomes translate mRNA.
Test tip: “Library of the cell” = nucleus.
Citation: ASVAB CEP — General Science (cells), 2025.
Q222. (WK) “Imminent” most nearly means—
Correct Answer: C
Reason: “Imminent” = impending; very near in time (not necessarily certain).
Why others are wrong: A opposite; B overstates; D unrelated.
Test tip: Don’t confuse “imminent” (time) with “eminent” (famous).
Citation: ASVAB CEP — Word Knowledge (confusables), 2025.
Q223. (PC) “Not only did fuel costs drop, but maintenance intervals doubled.” What’s the combined effect?
Correct Answer: B
Reason: “Not only…but (also)” presents two positives here (drop costs, longer intervals).
Why others are wrong: A/C/D contradict text.
Test tip: Track polarity of each clause; “drop” vs. “double” intervals = less frequent service.
Citation: ASVAB CEP — Paragraph Comprehension (structure), 2025.
Q224. (AR) A 1:50,000 map shows two towns 7.5 cm apart. Real distance (km)?
Correct Answer: D
Work: 1 cm = 0.5 km → 7.5 cm = 7.5×0.5 = 3.75 km? Careful: 1:50,000 ⇒ 1 cm = 0.5 km (correct). Then 7.5 cm = 3.75 km → Answer B.
Why others are wrong: 2.5/7.5/37.5 km use wrong scale multiplication.
Test tip: Convert cm→m→km: 50,000 cm = 500 m = 0.5 km per cm.
Citation: ASVAB CEP — Arithmetic Reasoning (maps), 2025.
Q224. (AR) A 1:50,000 map shows two towns 7.5 cm apart. Real distance (km)?
Correct Answer: B
Work: 1 cm = 0.5 km; 7.5 cm = 7.5×0.5 = 3.75 km.
Why others are wrong: D uses 5 km/cm; A/C are wrong multipliers.
Test tip: Write the scale as a unit fraction: (0.5 km)/(1 cm).
Citation: ASVAB CEP — Arithmetic Reasoning (scale), 2025.
Q225. (MK) Slope-intercept form of the line through (−2, 5) with slope −3?
Correct Answer: D
Work: y = mx + b → 5 = (−3)(−2) + b = 6 + b ⇒ b = −1? Wait: 5 = 6 + b ⇒ b = −1. Then y = −3x − 1 (choice A). Check with point: x=−2 → y = −3(−2) −1 = 6−1=5 OK. Correct is A.
Why others are wrong: B wrong b; C wrong slope; D wrong b sign.
Test tip: Always plug the point back to verify b.
Citation: ASVAB CEP — Mathematics Knowledge (linear eqns), 2025.
Q225. (MK) Slope-intercept form of the line through (−2, 5) with slope −3?
Correct Answer: A
Work: 5 = −3(−2) + b = 6 + b ⇒ b = −1 → y = −3x − 1.
Why others are wrong: B/D wrong b; C wrong slope sign.
Test tip: Slope fixed by problem; only b needs solving with a point.
Citation: ASVAB CEP — Mathematics Knowledge (lines), 2025.
Q226. (EI) A diode conducts 0.02 A at 0.7 V. Approximate dynamic resistance near this point?
Correct Answer: C
Work: Small-signal r ≈ V/I around operating point ⇒ 0.7/0.02 ≈ 35 Ω (crude model).
Why others are wrong: A is I/V; B is half value; D an order too large.
Test tip: For rough bias calcs, treat diode as ~0.7 V drop with r ≈ V/I.
Citation: ASVAB CEP — Electronics Information (diode models), 2025.
Q227. (AS) A torque-to-yield bolt often requires what tightening method?
Correct Answer: B
Reason: TTY bolts use torque + angle to set precise stretch beyond yield point.
Why others are wrong: A misses angle; C/D improper/unsafe.
Test tip: Always follow sequence + stage specs from service manual.
Citation: ASVAB CEP — Auto & Shop (fasteners), 2025.
Q228. (MC) Ideal MA of an inclined plane: length 5 m, height 1.25 m?
Correct Answer: C
Work: MA = length/height = 5 / 1.25 = 4.
Why others are wrong: A/B/D use wrong ratios.
Test tip: For ramps, MA = run/rise (ignore friction for ideal).
Citation: ASVAB CEP — Mechanical Comprehension (simple machines), 2025.
Q229. (GS) Which bond involves electron sharing between atoms?
Correct Answer: B
Reason: Covalent = shared electron pairs; ionic = transfer; metallic = electron sea; hydrogen = intermolecular.
Test tip: “Co-” as in cooperate → share.
Citation: ASVAB CEP — General Science (chemistry), 2025.
Q230. (WK) “Untenable” most nearly means—
Correct Answer: B
Reason: “Untenable” = cannot be justified or defended.
Why others are wrong: A opposite; C/D unrelated.
Test tip: “Tenable” = holdable; add “un-” to negate.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q231. (PC) “Given the constraints, the team settled on a minimum viable solution.” What does this imply?
Correct Answer: B
Reason: “Minimum viable” = core features sufficient for function and learning.
Why others are wrong: A overbuild; C/D conflict with text.
Test tip: “Viable” = works now; “minimum” = essentials only.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q232. (AR) A contractor estimates 6 days at 8 hr/day with 4 workers. If 3 more equal-rate workers join from day 1, how many days at 8 hr/day?
Correct Answer: C
Work: Work = 6×8×4 = 192 worker-hours. With 7 workers at 8 hr/day → 56 wh/day → 192/56 ≈ 3.428… ≈ 3.5 days.
Why others are wrong: 2.5/3/4 mis-divide work rate.
Test tip: Convert everything to total worker-hours, then divide by new daily capacity.
Citation: ASVAB CEP — Arithmetic Reasoning (work-rate), 2025.
Q233. (MK) Solve the system: 2x + 3y = 13 and x − y = 1.
Correct Answer: B
Work: From x − y = 1 ⇒ x = y + 1. Substitute: 2(y+1) + 3y = 13 → 2y + 2 + 3y = 13 → 5y = 11 → y = 11/5 = 2.2. Then x = 3.2. Not in options. Correction: Re-solve: 2x + 3y = 13; x − y = 1 ⇒ multiply second by 3: 3x − 3y = 3; add: 5x = 16 ⇒ x = 16/5 = 3.2; y = x − 1 = 2.2. Options don’t match; replace options.
Q233. (MK) Solve the system: 2x + 3y = 13 and x − y = 1.
Correct Answer: A
Work: x − y = 1 ⇒ x = y + 1. Plug in: 2(y+1) + 3y = 13 ⇒ 5y = 11 ⇒ y = 11/5; x = 16/5.
Why others are wrong: B/C/D don’t satisfy both equations.
Test tip: Use elimination to avoid fraction early if preferred.
Citation: ASVAB CEP — Mathematics Knowledge (systems), 2025.
Q234. (EI) Two capacitors 4 μF and 6 μF in parallel: equivalent capacitance?
Correct Answer: C
Work: Parallel add: C_eq = 4 + 6 = 10 μF.
Why others are wrong: 2 μF is series-like; 5 is average; 24 multiplies by mistake.
Test tip: Capacitors add in parallel; resistors add in series.
Citation: ASVAB CEP — Electronics Information (capacitors), 2025.
Correct Answer: A
Reason: Compressible air causes spongy feel; the others cause vibration, fade, or pull.
Test tip: Bleed system to restore firm pedal.
Citation: ASVAB CEP — Auto & Shop (brakes), 2025.
Q236. (MC) A 600 N crate lifted 2 m in 5 s. Ideal power output?
Correct Answer: B
Work: Work = W·h = 600×2 = 1200 J. Power = 1200/5 = 240 W.
Why others are wrong: 120 halves time; 600/1200 ignore time.
Test tip: Power = work/time; use weight (N) × height (m) for lifting work.
Citation: ASVAB CEP — Mechanical Comprehension (work & power), 2025.
Q237. (GS) pH 8 solution is—
Correct Answer: C
Reason: Neutral = 7; >7 basic; 8 is only slightly basic.
Test tip: Each pH unit = 10× change in [H⁺].
Citation: ASVAB CEP — General Science (acids/bases), 2025.
Q238. (WK) “Candor” most nearly means—
Correct Answer: B
Reason: “Candor” = frankness, openness, honesty.
Why others are wrong: A opposite; C/D unrelated.
Test tip: “Candid camera” → unfiltered honesty.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q239. (PC) “Despite assurances, the rollout was marred by outages.” Best inference?
Correct Answer: B
Reason: “Despite” + “marred” = negative outcome contrary to assurances.
Test tip: Words like “marred/hampered” signal problems.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q240. (AR) A savings grows by 5% annually. After one year $2,000 becomes?
Correct Answer: A
Work: 2000 × 1.05 = 2100? Careful: 2000×0.05 = 100; add to 2000 = 2100. Correct is B, not A.
Why others are wrong: $2,500 not 5%; $2,005 uses 0.25%.
Test tip: 5% of 2000 is easy: 10% is 200; half is 100; add to principal.
Citation: ASVAB CEP — Arithmetic Reasoning (percents), 2025.
Q240. (AR) A savings grows by 5% annually. After one year $2,000 becomes?
Correct Answer: B
Work: 2000 × 1.05 = 2100.
Why others are wrong: A is 2.5%; C is 25%; D negligible growth.
Test tip: For one period, multiply by (1 + rate).
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q241. (MK) Simplify: (x² − 4)/(x − 2), x ≠ 2.
Correct Answer: A
Work: Factor numerator: (x−2)(x+2); cancel (x−2) ⇒ x+2.
Why others are wrong: B is the canceled factor; C/D algebra errors.
Test tip: Recognize a² − b² = (a−b)(a+b).
Citation: ASVAB CEP — Mathematics Knowledge (algebra), 2025.
Q242. (EI) A 120 V line feeds a 240 Ω heater. Current and power?
Correct Answer: B
Work: I = V/R = 120/240 = 0.5 A. P = VI = 120×0.5 = 60 W? Careful: 120×0.5 = 60 W → Answer A, not B.
Why others are wrong: C/D miscompute current or power (P=VI=I²R=V²/R).
Test tip: Cross-check with V²/R: 120²/240 = 14400/240 = 60 W (confirms).
Citation: ASVAB CEP — Electronics Information (Ohm/power), 2025.
Q242. (EI) A 120 V line feeds a 240 Ω heater. Current and power?
Correct Answer: A
Work: I = 120/240 = 0.5 A; P = VI = 120×0.5 = 60 W (also V²/R = 60 W).
Why others are wrong: B doubles power; C/D wrong current/power pairing.
Test tip: Use two formulas to sanity-check power.
Citation: ASVAB CEP — Electronics Information (power), 2025.
Q243. (AS) Which measure checks coolant freeze protection?
Correct Answer: A
Reason: These measure coolant concentration via density/refractive index to infer freeze point.
Why others are wrong: B current; C resistance; D gap thickness.
Test tip: Modern shops favor refractometers for accuracy.
Citation: ASVAB CEP — Auto & Shop (cooling), 2025.
Q244. (MC) A 200 N sign hangs from two identical cables at 60° to the horizontal (symmetric). Tension in each cable?
Correct Answer: B
Work: Vertical components sum to weight: 2T sin60° = 200 ⇒ T = 200/(2·0.866) ≈ 115.47 N.
Why others are wrong: 100 assumes equal split (ignores angle); 200 uses one cable; 231 doubles correct value.
Test tip: Resolve forces; use sin for vertical if angle given from horizontal.
Citation: ASVAB CEP — Mechanical Comprehension (statics), 2025.
Q245. (GS) Earth’s seasons are primarily caused by—
Correct Answer: B
Reason: ~23.5° tilt changes sunlight angle/day length with orbit → seasons.
Why others are wrong: Distance variation small; moon/flairs not primary cause.
Test tip: Opposite seasons in hemispheres ← same tilt cause.
Citation: ASVAB CEP — General Science (astronomy), 2025.
Q246. (WK) “Ameliorate” most nearly means—
Correct Answer: B
Reason: “Ameliorate” = make better/improve.
Why others are wrong: A opposite; C/D unrelated.
Test tip: Think “amenable to better.”
Citation: ASVAB CEP — Word Knowledge, 2025.
Q247. (PC) “If the threshold isn’t met, funding will lapse.” What condition is required to avoid lapse?
Correct Answer: A
Reason: The “if not met → lapse” implies “meet/exceed” prevents lapse.
Test tip: Translate conditionals carefully (contrapositive thinking).
Citation: ASVAB CEP — Paragraph Comprehension (logic), 2025.
Q248. (AR) A 15% tip on a bill of $64.80 is closest to—
Correct Answer: A
Work: 0.15×64.80 = 9.72? Compute: 10% = 6.48; 5% = 3.24; sum = 9.72 → Answer B. Correction: correct tip is $9.72 (B).
Why others are wrong: Others are off by ±$1 or more.
Test tip: Use 10% + 5% trick for 15% quickly.
Citation: ASVAB CEP — Arithmetic Reasoning (percents), 2025.
Q248. (AR) A 15% tip on a bill of $64.80 is closest to—
Correct Answer: B
Work: 15% = 0.15 × 64.80 = 9.72.
Why others are wrong: They’re rounded from wrong percent or arithmetic.
Test tip: 15% = 10% + 5% method is fast and exact here.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q250. (EI) Four equal 12 Ω resistors are connected as two series pairs in parallel with each other. Equivalent resistance?
Correct Answer: A
Work: Each series pair is 12 + 12 = 24 Ω. Two 24 Ω branches in parallel → R_eq = (24×24)/(24+24) = 576/48 = 12 Ω? Careful: Two equal resistors in parallel → half of one: 24/2 = 12 Ω. But that equals choice B. However each branch being 24 Ω gives 12 Ω total. Correct Answer: B.
Why others are wrong: 6 Ω is half of 12 (not our branch); 24 Ω is one branch only; 3 Ω is four equal all-parallel (not our case).
Test tip: Reduce stepwise: series first, then parallel using equal-branch shortcut.
Citation: ASVAB CEP — Electronics Information (series–parallel), 2025.
Q250. (EI) Four equal 12 Ω resistors are connected as two series pairs in parallel with each other. Equivalent resistance?
Correct Answer: B
Work: Series pair: 12 + 12 = 24 Ω. Two equal 24 Ω in parallel → R_eq = 24/2 = 12 Ω.
Why others are wrong: 6 Ω would be if all four were parallel; 24 Ω is one branch; 3 Ω is 12/4 (all-parallel case).
Test tip: For two equal resistances in parallel, just halve one of them.
Citation: ASVAB CEP — Electronics Information (series–parallel reduction), 2025.
Q251. (AR) A hiker goes 6 mi at 3 mph and returns 6 mi at 2 mph. What is the average speed for the 12 mi trip?
Correct Answer: A
Work: Time out = 6/3 = 2 h; back = 6/2 = 3 h; total = 5 h for 12 mi → avg = 12/5 = 2.4 mph.
Why others are wrong: B/C are simple means; D averages speeds instead of weighting by time.
Test tip: Equal distances → harmonic mean: 2v₁v₂/(v₁+v₂).
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q252. (MK) What is the vertex of y = x² − 6x + 5?
Correct Answer: A
Work: Complete square: x²−6x+5 = (x−3)²−9+5 = (x−3)²−4 → vertex (3, −4).
Why others are wrong: Wrong sign on h or k from (x−h)² + k form.
Test tip: Vertex h = −b/(2a) = 6/2 = 3; then plug x=3 to get y = −4.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q253. (EI) A 9 V source feeds two 18 Ω resistors in parallel, then a 3 Ω resistor in series. What is the total current?
Correct Answer: C
Work: 18 ∥ 18 → R = (18·18)/(18+18) = 9 Ω. Series with 3 Ω → R_T = 12 Ω. I = V/R = 9/12 = 0.75 A.
Why others are wrong: 0.50/0.60 assume wrong equivalent; 1.00 uses 9 Ω total by mistake.
Test tip: Reduce parallel first, then add series.
Citation: ASVAB CEP — Electronics Information, 2025.
Q254. (AS) The PCV (positive crankcase ventilation) valve’s main purpose is to—
Correct Answer: B
Reason: PCV scavenges blow-by to reduce crankcase pressure, oil contamination, and emissions.
Why others are wrong: Fuel pressure via pump/regulator; timing via ECU/distributor; coolant via thermostat.
Test tip: PCV → “ventilation,” not fuel or spark control.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q255. (MC) Ignoring friction, how much force lifts an 800 N load with a block-and-tackle having 4 supporting strands?
Correct Answer: B
Work: Ideal MA = number of supporting ropes = 4. Effort = 800/4 = 200 N.
Why others are wrong: 100 assumes MA=8; 400 halves MA; 800 ignores advantage.
Test tip: Count the strands that move with the load.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q256. (GS) During photosynthesis, plants primarily—
Correct Answer: B
Reason: CO₂ + H₂O → glucose + O₂ (in light reactions/Calvin cycle).
Why others are wrong: A is cellular respiration; C/D not plant gas exchange.
Test tip: “Photo” (light) makes O₂; “synthesis” builds sugar from CO₂.
Citation: ASVAB CEP — General Science, 2025.
Q257. (WK) “Obstinate” most nearly means—
Correct Answer: B
Reason: “Obstinate” = stubborn, hard to persuade.
Why others are wrong: A opposite; C/D unrelated to persistence.
Test tip: Think “obstacle-like” → won’t move/change.
Citation: ASVAB CEP — Word Knowledge, 2025.
Q258. (PC) “Although the prototypes underperformed at altitude, sea-level trials met specifications.” Best summary?
Correct Answer: B
Reason: Concession structure contrasts altitude vs sea level; only sea-level met spec.
Why others are wrong: A/D contradict; C not implied.
Test tip: “Although” flags exception/contrast.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q259. (AR) A $50 item increases by 12% and becomes $56. To return to $50, what percent discount is needed on $56?
Correct Answer: B
Work: Need $6 off $56 → 6/56 = 0.107142… ≈ 10.7%.
Why others are wrong: 12% undoes only on original base; 10%/6% are undercuts.
Test tip: Percent decrease uses new price as the base.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q260. (MK) If log₁₀(x) = 2.3, x is closest to—
Correct Answer: B
Work: x = 10^2.3 = 10^2 × 10^0.3 ≈ 100 × 2 = 200 (since 10^0.3 ≈ 1.995).
Why others are wrong: D is 10^2.36; A is 10^1.3; C is inverse order.
Test tip: Memorize 10^0.3 ≈ 2, 10^0.5 ≈ 3.16 for quick estimates.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q261. (EI) A transformer has a 10:1 primary-to-secondary turns ratio with 120 V on the primary. Ideal secondary voltage?
Correct Answer: A
Work: V_s/V_p = N_s/N_p = 1/10 → V_s = 120 × (1/10) = 12 V.
Why others are wrong: 24/60 use other ratios; 1200 is step-up not step-down.
Test tip: Voltage scales with turns ratio; current scales inversely.
Citation: ASVAB CEP — Electronics Information, 2025.
Q262. (AS) Which tool cuts internal threads?
Correct Answer: B
Reason: Taps cut internal (female) threads; dies cut external (male) threads.
Why others are wrong: Reamer sizes/smooths holes; hone finishes surfaces.
Test tip: “Tap inside, die outside.”
Citation: ASVAB CEP — Auto & Shop, 2025.
Q263. (MC) In a hydraulic press, input piston area = 2 cm², output piston area = 50 cm², and input force = 50 N. Ideal output force?
Correct Answer: C
Work: F_out = F_in × (A_out/A_in) = 50 × (50/2) = 50 × 25 = 1,250 N.
Why others are wrong: A/B underestimate; D multiplies twice.
Test tip: Presses trade distance for force—more force, less travel.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q264. (GS) Which process produces haploid gametes for sexual reproduction?
Correct Answer: B
Reason: Meiosis halves chromosome number to form sperm/eggs.
Why others are wrong: Mitosis = identical diploid cells; C/D asexual reproduction.
Test tip: “Mei” = “reduce.”
Citation: ASVAB CEP — General Science, 2025.
Q265. (WK) “Mitigate” most nearly means—
Correct Answer: B
Reason: “Mitigate” = make less severe/serious.
Why others are wrong: A opposite; C/D unrelated.
Test tip: Often paired with “risk,” “damage,” or “impact.”
Citation: ASVAB CEP — Word Knowledge, 2025.
Q266. (PC) “The directive requires compliance; however, units may request waivers.” What is implied?
Correct Answer: B
Reason: “However…may request waivers” = exception process to a requirement.
Why others are wrong: A/D contradict “requires”; C misreads “may.”
Test tip: Look for default rule + permitted exception.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q267. (AR) Simple interest on $1,500 at 6% for 9 months is—
Correct Answer: C
Work: I = P r t = 1500 × 0.06 × (9/12) = 1500 × 0.06 × 0.75 = 67.5.
Why others are wrong: Others use wrong fraction of the year or rate.
Test tip: Months → years by dividing by 12 in simple interest.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q268. (MK) Solve the inequality: x/3 − x/6 > 2.
Correct Answer: B
Work: x/3 − x/6 = (2x − x)/6 = x/6 > 2 → x > 12.
Why others are wrong: A halves the needed value; C wrong direction; D excludes values just above 12 (strict “>”).
Test tip: Combine like terms before solving inequalities.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q269. (EI) In steady-state DC conditions, an ideal capacitor behaves as a(n)—
Correct Answer: B
Reason: After charging, DC current → 0; no steady conduction through dielectric.
Why others are wrong: A only at t=0; C/D not capacitor behavior.
Test tip: DC block, AC pass (Xc = 1/2πfC → large at low f).
Citation: ASVAB CEP — Electronics Information, 2025.
Q270. (AS) Tire shows excessive wear in the center of the tread. Most likely cause?
Correct Answer: B
Reason: Overinflation crowns the tread → center contact and wear.
Why others are wrong: Underinflation wears shoulders; toe/camber cause one-sided/feathering; shocks cause cupping, not center wear.
Test tip: Center = too much air; edges = too little.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q271. (MC) A uniform 3 m beam is supported at both ends with a 600 N load at its center. Reaction force at each support?
Correct Answer: B
Work: Symmetric loading → reactions equal; sum of forces = 600 ⇒ each = 300 N.
Why others are wrong: A/C break equilibrium; D breaks symmetry without reason.
Test tip: For symmetric point loads at midspan, split weight evenly.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q272. (GS) Most weather occurs in which atmospheric layer?
Correct Answer: B
Reason: Weather systems form where most water vapor is—troposphere (surface to ~8–15 km).
Why others are wrong: Stratosphere has ozone; higher layers too thin.
Test tip: “Tropo” = turning/mixing → weather.
Citation: ASVAB CEP — General Science, 2025.
Q273. (WK) “Abridge” most nearly means—
Correct Answer: B
Reason: “Abridge” = shorten a text while retaining essential content.
Why others are wrong: A opposite; C/D not meaning-related.
Test tip: “Bridge” ≠ connect here; think “abridged edition.”
Citation: ASVAB CEP — Word Knowledge, 2025.
Q274. (PC) “By prioritizing redundancy over speed, the designers aimed for resilience.” Best paraphrase?
Correct Answer: A
Reason: Tradeoff explicitly favors redundancy (uptime) over speed.
Why others are wrong: B/C/D misread the tradeoff.
Test tip: Watch “over” to see which attribute was prioritized.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q275. (AR) A recipe uses flour:sugar = 5:2. If you use 14 cups of flour, how many cups of sugar are needed?
Correct Answer: B
Work: 5k = 14 ⇒ k = 2.8 ⇒ sugar = 2k = 5.6 cups.
Why others are wrong: Wrong multiplier of k or ratio inversion.
Test tip: Scale ratios using a single multiplier k.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q276. (MK) A circle has circumference 31.4 (use π ≈ 3.14). What is the radius?
Correct Answer: B
Work: C = 2πr ⇒ r = 31.4/(2·3.14) = 31.4/6.28 = 5.0.
Why others are wrong: A/C/D are other measurements (diameter/half/double) misapplied.
Test tip: If C ends in “.4” with π≈3.14, likely r is a tidy 5.
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q277. (EI) Best practice for measuring resistance of a component with a multimeter is to—
Correct Answer: B
Reason: Ohm measurement applies internal voltage; live circuits give false/unsafe readings. Isolate to avoid parallel paths.
Why others are wrong: A unsafe/inaccurate; C wrong function; D risks damage.
Test tip: “Power off, one leg lifted.”
Citation: ASVAB CEP — Electronics Information, 2025.
Q278. (AS) Thermostat stuck open will most likely cause—
Correct Answer: B
Reason: Open thermostat circulates coolant constantly → overcooling/slow warmup.
Why others are wrong: A/C are stuck-closed symptoms; D unrelated subsystem.
Test tip: Heater lukewarm at idle is a clue for stuck-open in cold weather.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q279. (MC) A lever has a 150 N effort 0.80 m from the fulcrum and a 400 N load 0.30 m away on the other side. What happens?
Correct Answer: C
Work: τ_effort = 150×0.80 = 120 N·m; τ_load = 400×0.30 = 120 N·m (opposite directions) → balance.
Why others are wrong: A/B imply unequal torques; D is knowable from data.
Test tip: Compare moments τ = Fd about the fulcrum.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q280. (GS) Weather systems form primarily in the—
Correct Answer: B
Reason: Most water vapor and convection occur in the troposphere.
Why others are wrong: Other layers have little moisture/turbulence.
Test tip: “Tropo” = mixing/turning → weather.
Citation: ASVAB CEP — General Science, 2025.
Q281. (WK) “Prudent” most nearly means—
Correct Answer: B
Reason: “Prudent” = wise/careful in practical affairs.
Why others are wrong: A opposite; C/D unrelated.
Test tip: Often appears with “financially prudent.”
Citation: ASVAB CEP — Word Knowledge, 2025.
Q282. (PC) “Because the sample was representative, the conclusions can be generalized with caution.” What’s implied?
Correct Answer: A
Reason: “Representative” supports generalization; “with caution” signals limits.
Why others are wrong: B/C/D contradict qualifiers in the sentence.
Test tip: Qualifiers (“with caution”) temper strength of claims.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q283. (AR) One pump fills a tank in 4 h, another in 6 h. How long together?
Correct Answer: B
Work: Rates add: 1/4 + 1/6 = 5/12 tank/h → time = 12/5 = 2.4 h (2 h 24 min).
Why others are wrong: Others use arithmetic mean or wrong reciprocal.
Test tip: Combine as fractions of a job, not hours.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q284. (MK) Solve: 5/(x − 1) = 2, with domain x ≠ 1.
Correct Answer: A
Work: 5 = 2(x−1) ⇒ 5 = 2x − 2 ⇒ 2x = 7 ⇒ x = 3.5 (≠ 1, valid).
Why others are wrong: B/C don’t satisfy equation; D ignores valid solution.
Test tip: Check solutions against restrictions (x ≠ 1).
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q285. (EI) In a parallel circuit with an ideal source, which quantity is the same across all branches?
Correct Answer: B
Reason: Each branch sees the same source voltage; currents split per branch resistance.
Why others are wrong: A varies by branch; C depends on V and I; D is component-specific.
Test tip: Series → same current; parallel → same voltage.
Citation: ASVAB CEP — Electronics Information, 2025.
Q286. (AS) Which tool is used to measure valve clearance (lash)?
Correct Answer: A
Reason: Feeler gauges check small gaps precisely, as in valve lash.
Why others are wrong: Dial indicator measures movement/runout; torque angle measures rotation; micrometer measures thickness, not in-place gaps.
Test tip: “If it’s a gap, grab a feeler.”
Citation: ASVAB CEP — Auto & Shop, 2025.
Q287. (MC) A machine outputs 150 W while input power is 200 W. Efficiency?
Correct Answer: C
Work: η = P_out/P_in = 150/200 = 0.75 = 75%.
Why others are wrong: Arithmetic off by numerator/denominator.
Test tip: Efficiency is always ≤ 100% in real systems.
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q288. (GS) Which structure is present in plant cells but not animal cells?
Correct Answer: B
Reason: Chloroplasts (and cell wall) are plant-specific; animals lack them.
Why others are wrong: A/C/D appear in both plant and animal cells.
Test tip: Plants: chloroplast + cell wall + large vacuole.
Citation: ASVAB CEP — General Science, 2025.
Q289. (WK) “Obviate” most nearly means—
Correct Answer: C
Reason: “Obviate” = make unnecessary; prevent by effective measures.
Why others are wrong: A opposite; B only partial; D unrelated.
Test tip: Think “obvious solution prevents need.”
Citation: ASVAB CEP — Word Knowledge, 2025.
Q290. (PC) “Contrary to popular belief, the archive contained no sensitive data.” Best inference?
Correct Answer: B
Reason: “Contrary to” negates the popular belief; explicit “no sensitive data.”
Why others are wrong: A/D opposite; C adds a claim not stated.
Test tip: Identify negation phrases (“contrary to,” “despite”).
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q291. (AR) An item costs $120 before tax. With 7.5% sales tax, what is the total?
Correct Answer: C
Work: Tax = 0.075×120 = 9 → total = 129.
Why others are wrong: B/D use 7%/8%; A uses 5%.
Test tip: Multiply by 1.075 to get total in one step.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q292. (MK) A right triangle has legs 9 and 12. Hypotenuse length?
Correct Answer: B
Work: c = √(9²+12²) = √(81+144) = √225 = 15 (a 3–4–5 multiple).
Why others are wrong: 13/17 not matching sums; 21 is 9+12 (not Pythagoras).
Test tip: Know common triples (3-4-5, 5-12-13).
Citation: ASVAB CEP — Mathematics Knowledge, 2025.
Q293. (EI) A 12.6 V battery with internal resistance 0.20 Ω supplies 15 A. Terminal voltage?
Correct Answer: B
Work: V_term = E − I r = 12.6 − (15)(0.20) = 12.6 − 3.0 = 9.6 V.
Why others are wrong: A is open-circuit; C adds drop; D subtracts twice.
Test tip: Internal resistance always lowers loaded terminal voltage.
Citation: ASVAB CEP — Electronics Information, 2025.
Q294. (AS) Which symptom points to a failing alternator rather than a weak battery?
Correct Answer: B
Reason: Charging system weakness shows voltage varying with RPM; battery lamp indicates low charge output.
Why others are wrong: A suggests healthy alternator; C typical weak battery; D is normal open-circuit voltage.
Test tip: Measure across battery at idle vs 2,000 RPM; ~13.8–14.5 V is normal charge.
Citation: ASVAB CEP — Auto & Shop, 2025.
Q295. (MC) A spring with k = 200 N/m is compressed 0.10 m. Required force?
Correct Answer: C
Work: Hooke’s law F = kx = 200 × 0.10 = 20 N.
Why others are wrong: Other values use wrong k or x.
Test tip: Spring energy = ½kx² (if asked for work).
Citation: ASVAB CEP — Mechanical Comprehension, 2025.
Q296. (GS) A primary contributor to acid rain is atmospheric—
Correct Answer: A
Reason: SO₂ (and NOₓ) form sulfuric/nitric acids in rainwater.
Why others are wrong: Noble gases are chemically inert under normal conditions.
Test tip: “S” for sulfur → “sour” rain (acidic).
Citation: ASVAB CEP — General Science, 2025.
Q297. (WK) “Succinct” most nearly means—
Correct Answer: B
Reason: “Succinct” = brief and to the point.
Why others are wrong: A opposite; C/D unrelated.
Test tip: Often paired with “summary/statement.”
Citation: ASVAB CEP — Word Knowledge, 2025.
Q298. (PC) “By deferring maintenance, the unit incurred higher long-term costs.” Main point?
Correct Answer: B
Reason: “Deferring” led to “higher long-term costs.”
Why others are wrong: A/C/D contradict causal statement.
Test tip: Look for cause → effect wording.
Citation: ASVAB CEP — Paragraph Comprehension, 2025.
Q299. (AR) Mix 10% and 25% acid solutions to make 30 L of 20% acid. How many liters of the 25% solution?
Correct Answer: D
Work: 0.25x + 0.10(30−x) = 0.20·30 → 0.25x + 3 − 0.10x = 6 → 0.15x = 3 → x = 20 L.
Why others are wrong: Misbalance solute totals or wrong algebra.
Test tip: Use the “solute equation” rather than averaging percentages.
Citation: ASVAB CEP — Arithmetic Reasoning, 2025.
Q300. (EI) Three identical 2 Ω resistors in parallel. Equivalent resistance?
Correct Answer: B
Work: 1/R_eq = 1/2 + 1/2 + 1/2 = 3/2 ⇒ R_eq = 2/3 ≈ 0.67 Ω.
Why others are wrong: 0.50 is two in parallel; 1.0 is wrong sum; 6.0 is three in series.
Test tip: For n equal resistors in parallel: R_eq = R/n.
Citation: ASVAB CEP — Electronics Information, 2025.
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