Fundamentals of Machine Design (3141907) MCQs

MCQs of Shafts and Keys

Showing 21 to 30 out of 35 Questions
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21.
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both directions of rotation?
(a) Woodruff key
(b) Feather key
(c) Gib-head key
(d) Tangent key
Answer:

Option (d)

22.
A key made from a cylindrical disc having segmental cross-section is known as
(a) feather key
(b) gib head key
(c) woodruff key
(d) flat saddle key
Answer:

Option (d)

23.
The type of stresses developed in the key is/are
(a) shear stress alone
(b) bearing stress alone
(c) both shear and bearing stresses
(d) shearing, bearing and bending stresses
Answer:

Option (c)

24.
A saddle key __________ power through frictional resistance only.
(a) transmits
(b) does not transmit
Answer:

Option (a)

25.
A tapered key that fits in a keyway in the hub and the bottom of which is shaped to fit the curved surface of the shaft is known as the hollow saddle key.
(a) Correct
(b) Incorrect
Answer:

Option (a)

26.
A tangent key is provided in pairs at right angles and each key is to withstand torsion in one direction only.
(a) Agree
(b) Disagree
Answer:

Option (a)

27.
A feather key transmits a turning moment and permits axial movement also.
(a) True
(b) False
Answer:

Option (a)

28.
The thickness of key is usually taken equal to one-sixth of diameter of shaft.
(a) Yes
(b) No
Answer:

Option (a)

29.
The taper on a rectangular sunk key is
(a) 1 in 16
(b) 1 in 32
(c) 1 in 48
(d) 1 in 100
Answer:

Option (d)

30.
A key made from a cylindrical disc having segmental cross-section is known as
(a) feather key
(b) gib-head key
(c) wood ruff key
(d) flat saddle key
Answer:

Option (c)

Showing 21 to 30 out of 35 Questions
1 2 3 4