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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) Bevel gear
B) Worm gear
C) Spur gear
D) Helical gear
  • 2. What is the benefit of using a pulley system?
A) It reduces mechanical advantage
B) It limits motion
C) It increases friction
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) Block and tackle pulley
B) Moveable pulley
C) Compound pulley
D) Fixed pulley
  • 4. What is the main difference between a simple and compound gear train?
A) Compound gear trains move slower
B) Compound gear trains have multiple intermediate gears
C) Simple gear trains have bigger gears
D) Simple gear trains are more complex
  • 5. Which type of gear is shaped like a screw and is used to increase or decrease rotational motion?
A) Helical gear
B) Worm 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) Spur gear
C) Rack and pinion gear
D) Bevel gear
  • 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 rolling the gears on a surface
C) By increasing friction between gears
D) By using a belt drive system
  • 8. What do worms gears provide in a system?
A) Flexible movement
B) High gear reduction
C) Slippery surface
D) Low gear reduction
  • 9. 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 adding more power sources
D) By increasing the size of the gears
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