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Mechanical Aptitude Principles Flashcards

7 cards from real CPS 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 Aptitude Principles flashcards as text

  1. Two gears mesh together. The driver gear has 10 teeth and the driven gear has 30 teeth. If the driver turns at 60 RPM, how fast does the driven gear turn?

    Answer: 20 RPM

    A larger driven gear (30 teeth vs 10) turns three times slower: 60 ÷ 3 = 20 RPM.

  2. When two meshed gears are in direct contact, how do their rotation directions compare?

    Answer: They rotate in opposite directions

    Two externally meshed gears always turn in opposite directions.

  3. A first-class lever has the fulcrum located where?

    Answer: Between the effort and the load

    In a first-class lever, such as a seesaw or crowbar, the fulcrum sits between the effort and the load.

  4. To lift a heavy load with the least effort using a lever, where should you apply the force?

    Answer: As far from the fulcrum as possible

    A longer effort arm increases mechanical advantage, reducing the force needed.

  5. A fixed single pulley changes which property of an applied force?

    Answer: The direction of the force

    A fixed pulley redirects force but provides no mechanical advantage, so the force magnitude stays the same.

  6. Water flows through a pipe that narrows from a wide section to a narrow section. What happens to the water's speed in the narrow section?

    Answer: It increases

    By continuity, fluid speeds up when forced through a smaller cross-sectional area.

  7. Which simple machine is a doorknob an example of?

    Answer: Wheel and axle

    A doorknob turns a small axle using a larger knob, making it a wheel-and-axle.