Cotter, Keys, and Shaft Quiz
1. Which type of key is most commonly used for transmitting high torque?
- a) Sunk key
- b) Saddle key
- c) Woodruff key
- d) Round key
Answer: a) Sunk key
2. What is the primary purpose of a cotter joint?
- a) To transmit torque between two shafts
- b) To join two rods under axial loading
- c) To provide angular movement between two shafts
- d) To reduce vibrations in a shaft
Answer: b) To join two rods under axial loading
3. Which type of shaft is designed to carry both axial and radial loads?
- a) Solid shaft
- b) Hollow shaft
- c) Flexible shaft
- d) Composite shaft
Answer: b) Hollow shaft
4. What is the main advantage of using a Woodruff key?
- a) Easy to install and remove
- b) Can accommodate angular misalignment
- c) Provides a secure fit
- d) Suitable for high-speed applications
Answer: b) Can accommodate angular misalignment
5. Which of the following is not a type of key used in mechanical engineering?
- a) Sunk key
- b) Saddle key
- c) Tangent key
- d) Hook key
Answer: d) Hook key
6. In a cotter joint, what is the function of the cotter?
- a) To transmit rotational motion
- b) To provide a tight fit
- c) To prevent axial movement
- d) To join two components together
Answer: d) To join two components together
7. Which type of shaft is preferred for applications requiring high torsional stiffness?
- a) Solid shaft
- b) Hollow shaft
- c) Flexible shaft
- d) Composite shaft
Answer: a) Solid shaft
8. Which key is semicircular in shape and fits into a recess in the shaft?
- a) Sunk key
- b) Saddle key
- c) Woodruff key
- d) Tangent key
Answer: c) Woodruff key
9. What is the purpose of a feather key?
- a) To transmit torque only
- b) To allow axial movement while transmitting torque
- c) To prevent rotational movement
- d) To absorb shock loads
Answer: b) To allow axial movement while transmitting torque
10. Which of the following is a common failure mode for keys in a mechanical system?
- a) Shearing
- b) Bending
- c) Fatigue
- d) All of the above
Answer: d) All of the above
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