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