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FCTC Mechanical Reasoning Principles Questions and Answers Flashcards

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

Read the first 6 FCTC Mechanical Reasoning Principles Questions and Answers flashcards as text

  1. A gear with 20 teeth meshes with a gear with 40 teeth. If the smaller gear rotates at 100 RPM, what is the speed of the larger gear?

    Answer: 50 RPM

    Gear speed is inversely proportional to tooth count, so 100 × (20/40) = 50 RPM.

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

    Answer: First-class lever

    A first-class lever places the fulcrum between the effort force and the load, like a seesaw.

  3. A pipe with a diameter of 4 inches narrows to a diameter of 2 inches. How does the fluid velocity change?

    Answer: It quadruples

    By continuity, flow area decreases by a factor of 4 (radius squared), so velocity quadruples.

  4. A 200-lb load is placed on one end of a lever 10 feet long. If the fulcrum is 2 feet from the load, how much effort is needed at the other end to balance it?

    Answer: 50 lb

    Torque balance: 200 × 2 = effort × 8, so effort = 400/8 = 50 lb.

  5. Which simple machine consists of a grooved wheel with a rope or cable running along its groove?

    Answer: Pulley

    A pulley is a grooved wheel that redirects or multiplies force using a rope or cable.

  6. If you push a 50-lb box up a frictionless inclined plane 10 feet long that rises 2 feet, what force is required?

    Answer: 10 lb

    The mechanical advantage is 10/2 = 5, so required force = 50/5 = 10 lb.