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Mechanical Comprehension Flashcards

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

Read the first 7 Mechanical Comprehension flashcards as text

  1. A cam converts which type of motion into another?

    Answer: Rotary to oscillating/linear

    A cam converts rotary motion into reciprocating or oscillating linear motion via a follower.

  2. Two objects of different masses are dropped from the same height in a vacuum. Which hits the ground first?

    Answer: They hit at the same time

    In a vacuum, gravity accelerates all objects equally regardless of mass, so both hit simultaneously.

  3. Which material is the best conductor of heat?

    Answer: Copper

    Copper has a very high thermal conductivity, making it the best heat conductor among these options.

  4. A driver gear with 40 teeth meshes with a driven gear with 10 teeth. If the driver turns at 100 RPM, what is the speed of the driven gear?

    Answer: 400 RPM

    Speed ratio is inverse of tooth ratio: 100 × (40/10) = 400 RPM.

  5. Which class of lever has the fulcrum located between the effort and the load?

    Answer: First class

    A first-class lever (like a seesaw or crowbar) has the fulcrum between effort and load.

  6. A belt connecting two pulleys slips when the tension difference between tight and slack sides is too great. What is the most effective fix?

    Answer: Increase belt tension

    Increasing belt tension raises friction force, allowing greater torque transfer without slipping.

  7. An object moving in a circle at constant speed has which type of acceleration?

    Answer: Centripetal acceleration directed inward

    Centripetal acceleration is always directed toward the center of the circle, causing the direction change.