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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) Worm gear
C) Bevel gear
D) Spur 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) Compound pulley
B) Block and tackle pulley
C) Fixed 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) Bevel gear
C) Helical gear
D) Rack and pinion gear
  • 5. What do worms gears provide in a system?
A) Low gear reduction
B) High gear reduction
C) Slippery surface
D) Flexible movement
  • 6. What is the main difference between a simple and compound gear train?
A) Compound gear trains have multiple intermediate gears
B) Simple gear trains have bigger 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) By using a belt drive system
B) By increasing friction between gears
C) By rolling the gears on a surface
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 reducing the number of gears
B) By increasing the size of the gears
C) By changing the speed at which force is applied
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) Bevel gear
C) Spur gear
D) Worm gear
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