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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) Bevel gear
C) Worm gear
D) Helical gear
  • 2. What is the benefit of using a pulley system?
A) It limits motion
B) It increases friction
C) It reduces mechanical advantage
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) 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) Helical gear
D) Bevel gear
  • 5. 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
  • 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) Simple gear trains are more complex
D) Compound gear trains have multiple intermediate gears
  • 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 increasing friction between gears
C) By using a belt drive system
D) By rolling the gears on a surface
  • 8. How does a gear train multiply torque?
A) By increasing the size of the gears
B) By adding more power sources
C) By changing the speed at which force is applied
D) By reducing the number of gears
  • 9. What do worms gears provide in a system?
A) Slippery surface
B) High gear reduction
C) Flexible movement
D) Low gear reduction
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