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The World of Gears and Pulleys - Exam
  • 1. Which type of gear has straight teeth and is most commonly used in industry?
A) Spur gear
B) Helical gear
C) Worm gear
D) Bevel gear
  • 2. What is the benefit of using a pulley system?
A) It increases friction
B) It limits motion
C) It can change the direction and magnitude of a force
D) It reduces mechanical advantage
  • 3. Which type of pulley changes only the direction of the force applied?
A) Fixed pulley
B) Compound 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) Bevel gear
B) Rack and pinion gear
C) Helical gear
D) Spur gear
  • 5. Which type of gear is shaped like a screw and is used to increase or decrease rotational motion?
A) Bevel gear
B) Helical gear
C) Worm gear
D) Spur gear
  • 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) Compound gear trains move slower
D) Simple gear trains are more complex
  • 7. How does a rack and pinion system convert rotary motion into linear motion?
A) By using a belt drive system
B) By rolling the gears on a surface
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 reducing the number of gears
C) By changing the speed at which force is applied
D) By adding more power sources
  • 9. What do worms gears provide in a system?
A) Slippery surface
B) Flexible movement
C) Low gear reduction
D) High gear reduction
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