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The World of Gears and Pulleys - Exam
  • 1. Which type of gear has straight teeth and is most commonly used in industry?
A) Worm gear
B) Spur gear
C) Helical gear
D) Bevel gear
  • 2. What is the benefit of using a pulley system?
A) It increases friction
B) It reduces mechanical advantage
C) It can change the direction and magnitude of a force
D) It limits motion
  • 3. Which type of pulley changes only the direction of the force applied?
A) Moveable pulley
B) Fixed pulley
C) Compound pulley
D) Block and tackle pulley
  • 4. How does a rack and pinion system convert rotary motion into linear motion?
A) The pinion gear engages with the teeth of the rack to move in a straight line
B) By using a belt drive system
C) By increasing friction between gears
D) By rolling the gears on a surface
  • 5. Which type of gear is shaped like a screw and is used to increase or decrease rotational motion?
A) Worm gear
B) Helical gear
C) Spur gear
D) Bevel gear
  • 6. Which gear type is used to change the direction of rotation in a system perpendicular to another gear?
A) Helical gear
B) Rack and pinion gear
C) Bevel gear
D) Spur gear
  • 7. How does a gear train multiply torque?
A) By adding more power sources
B) By changing the speed at which force is applied
C) By increasing the size of the gears
D) By reducing the number of gears
  • 8. What is the main difference between a simple and compound gear train?
A) Simple gear trains are more complex
B) Simple gear trains have bigger gears
C) Compound gear trains have multiple intermediate gears
D) Compound gear trains move slower
  • 9. What do worms gears provide in a system?
A) Flexible movement
B) Low gear reduction
C) High gear reduction
D) Slippery surface
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