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APT Mechanical Aptitude Flashcards

6 cards from real APT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 APT Mechanical Aptitude flashcards as text

  1. If gear A has 20 teeth and gear B has 10 teeth, and gear A rotates at 100 RPM, how fast does gear B rotate?

    Answer: 200 RPM

    When meshed gears have a 2:1 tooth ratio, the smaller gear spins twice as fast; 100 × (20/10) = 200 RPM.

  2. Which type of lever has the fulcrum between the effort and the load?

    Answer: First-class lever

    A first-class lever has the fulcrum positioned between the effort force and the load (e.g., a seesaw).

  3. A pulley system with 4 pulleys requires an effort force to lift a 400-pound load. Approximately how much effort is needed?

    Answer: 100 lbs

    A 4-pulley system provides a mechanical advantage of 4, reducing required effort to 400 ÷ 4 = 100 lbs.

  4. What is the purpose of a torque wrench?

    Answer: To measure and apply a specific tightening force

    A torque wrench measures and applies a precise amount of rotational force (torque) to fasteners.

  5. Water flows through a pipe that narrows from 4 inches to 2 inches in diameter. What happens to the water's speed?

    Answer: It increases

    According to the continuity principle, fluid speeds up when flowing through a narrower pipe to maintain constant flow rate.

  6. Which material is the BEST electrical conductor?

    Answer: Copper

    Copper is an excellent electrical conductor and is widely used in wiring for this reason.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. ng.ms.gov — Test delivery, eligibility, retake policy · verified Oct 2026
  2. home.army.mil — Test delivery · verified Oct 2026