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