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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) Bevel gear
B) Helical gear
C) Spur gear
D) Worm gear
  • 2. What is the benefit of using a pulley system?
A) It limits motion
B) It reduces mechanical advantage
C) It can change the direction and magnitude of a force
D) It increases friction
  • 3. Which type of pulley changes only the direction of the force applied?
A) Fixed pulley
B) Block and tackle pulley
C) Compound pulley
D) Moveable pulley
  • 4. 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
  • 5. Which type of gear is shaped like a screw and is used to increase or decrease rotational motion?
A) Helical gear
B) Worm gear
C) Bevel gear
D) Spur gear
  • 6. 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
  • 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 rolling the gears on a surface
C) By increasing friction between gears
D) By using a belt drive system
  • 8. What do worms gears provide in a system?
A) Low gear reduction
B) Flexible movement
C) High gear reduction
D) Slippery surface
  • 9. 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
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