Fundamentals of Machine Design (3141907) MCQs

MCQs of Shafts and Keys

Showing 31 to 35 out of 35 Questions
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31.
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.
(a) rectangular
(b) square
(c) parallel
Answer:

Option (c)

32.
The taper on key is given on
(a) bottom side only
(b) top side only
(c) on both sides
(d) any side
Answer:

Option (b)

33.
Which of the following statement is correct ?
(a) A parallel sunk key is a taperless key
(b) A parallel sunk key may be rectangular or square in cross-section
(c) A flat saddle key is a taper key which fits in a key way of the hub and is flat on the shaft
(d) all of the above
Answer:

Option (d)

34.
Which of the following statement is wrong?
(a) A key is used as a temporary fastening
(b) A key is subjected to tensile stresses
(c) A key is always inserted parallel to the axis of the shaft
(d) A key prevents relative motion between the shaft and boss of the pulley
Answer:

Option (b)

35.
In designing a key, it is assumed that the distribution of forces along the length of the key
(a) varies linearly
(b) is uniform throughout
(c) varies exponentially, being more at the torque-input end
(d) varies exponentially, being less at the torque-input end
Answer:

Option (b)

Showing 31 to 35 out of 35 Questions
1 2 3 4