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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) Helical gear
B) Bevel gear
C) Worm gear
D) Spur 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) Fixed pulley
B) Moveable pulley
C) Compound pulley
D) Block and tackle pulley
  • 4. What is the main difference between a simple and compound gear train?
A) Simple gear trains have bigger gears
B) Simple gear trains are more complex
C) Compound gear trains move slower
D) Compound gear trains have multiple intermediate gears
  • 5. 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
  • 6. Which gear type is used to change the direction of rotation in a system perpendicular to another gear?
A) Bevel gear
B) Spur gear
C) Helical gear
D) Rack and pinion gear
  • 7. How does a rack and pinion system convert rotary motion into linear motion?
A) By increasing friction between gears
B) By using a belt drive system
C) The pinion gear engages with the teeth of the rack to move in a straight line
D) By rolling the gears on a surface
  • 8. What do worms gears provide in a system?
A) Slippery surface
B) Flexible movement
C) High gear reduction
D) Low gear reduction
  • 9. 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 adding more power sources
D) By reducing the number of gears
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