MCQs of Shafts and Keys (Fundamentals of Machine Design - 3141907)

Fundamentals of Machine Design (3141907) MCQs

MCQs of Shafts and Keys

Showing 11 to 20 out of 35 Questions

11.

Which of the following act on shafts?

(a)	Torsional moment
(b)	Bending Moment
(c)	Both torsional and bending
(d)	None of the mentioned

12.

When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

(a)	$\frac{1}{2} \sqrt{M^{2} + T^{2}}$
(b)	$\sqrt{M^{2} + T^{2}}$
(c)	$\frac{1}{2} (M + \sqrt{M^{2} + T^{2}})$
(d)	$M + \sqrt{M^{2} + T^{2}}$

13.

If bending moment on point B in horizontal plate is M and in vertical plane is m, then the net bending moment at point B is?

(a)	$M$
(b)	$m$
(c)	$M + m$
(d)	$\sqrt{M^{2} + m^{2}}$

14.

A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

(a)	1 kN-m
(b)	2 kN-m
(c)	3 kN-m
(d)	4 kN-m

15.

The angle of twist of shaft is

(a)	$d i r e c t l y p r o p o r t i o n a l t o (s h a f t d i a m e t e r)^{2}$
(b)	$i n v e r s e l y p r o p o r t i o n a l t o (s h a f t d i a m e t e r)^{2}$
(c)	$d i r e c t l y p r o p o r t i o n a l t o (s h a f t d i a m e t e r)^{4}$
(d)	$i n v e r s e l y p r o p o r t i o n a l t o (s h a f t d i a m e t e r)^{4}$

16.

Which of following statement is correct, for the two shafts connected in parallel?

(a)	Torque in each shaft is the same
(b)	Shear stress in each shaft is the same
(c)	The angle of twist of each shaft is the same
(d)	Torsional stiffness of each shaft is the same

17.

A key way lowers

(a)	the strength of the shaft
(b)	the rigidity of the shaft
(c)	both the strength and rigidity of the shaft
(d)	the ductility of the shaft

18.

A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

(a)	feather key
(b)	gib-head key
(c)	wood ruff key
(d)	flat saddle key

19.

A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

(a)	sunk key
(b)	flat saddle key
(c)	hollow saddle key
(d)	tangent key

20.

A feather key is generally

(a)	loose in shaft and tight in hub
(b)	tight in shaft and loose in hub
(c)	tight in both shaft and hub
(d)	loose in both shaft and hub

Showing 11 to 20 out of 35 Questions