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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) Worm gear
B) Spur gear
C) Bevel gear
D) Helical gear
  • 2. What is the benefit of using a pulley system?
A) It can change the direction and magnitude of a force
B) It reduces mechanical advantage
C) It increases friction
D) It limits motion
  • 3. Which type of pulley changes only the direction of the force applied?
A) Moveable pulley
B) Compound pulley
C) Fixed pulley
D) Block and tackle pulley
  • 4. 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
  • 5. Which type of gear is shaped like a screw and is used to increase or decrease rotational motion?
A) Bevel gear
B) Spur 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) Rack and pinion gear
B) Helical gear
C) Spur gear
D) Bevel gear
  • 7. How does a gear train multiply torque?
A) By reducing the number of gears
B) By adding more power sources
C) By changing the speed at which force is applied
D) By increasing the size of the gears
  • 8. What is the main difference between a simple and compound gear train?
A) Simple gear trains have bigger gears
B) Compound gear trains have multiple intermediate gears
C) Simple gear trains are more complex
D) Compound gear trains move slower
  • 9. What do worms gears provide in a system?
A) Flexible movement
B) High gear reduction
C) Low gear reduction
D) Slippery surface
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