MCQs of Friction, Clutch and Brake (Kinematics and Theory of Machines - 3131906)

Kinematics and Theory of Machines (3131906) MCQs

MCQs of Friction, Clutch and Brake

Showing 71 to 77 out of 77 Questions

71.

From the following, which statement is not true regarding band brake?

(a)	A band brake is more reliable due to the small number of parts.
(b)	A band brake has a simple construction
(c)	The heat dissipation capacity of a band brake is very good
(d)	A band brake requires little maintenance

72.

_______ brakes are more popular as back-stop devices.

(a)	Block
(b)	Band
(c)	Internal shoe
(d)	External shoe

73.

A band and block brake consists of a number of _________ blocks secured inside a flexible steel band.

(a)	steel
(b)	wooden
(c)	plastic
(d)	rubber

74.

Wooden blocks are used in band and block brake as they have __________ coefficient of friction.

(a)	higher
(b)	lower
(c)	negligible
(d)	zero

75.

In a band and block brake, each block subtends an angle of ______ at the center of the drum.

(a)	θ/2
(b)	θ
(c)	2θ
(d)	3θ/2

76.

From the following, which statement is not true regarding assumptions in the analysis of the internal shoe brake?

(a)	The intensity of normal pressure between the friction lining and the brake drum at any point is proportional to its vertical distance from the pivot
(b)	The brake drum and the shoe are flexible
(c)	The centrifugal force acting on the shoe is negligible
(d)	The coefficient of friction is constant

77.

When the lubrication is arranged so that rubbing surfaces are separated by a fluid film, and the load on the surfaces is carried entirely by the hydrostatic or hydrodynamic pressure in the film, it is known as ________.

(a)	boundary lubrication
(b)	viscous lubrication
(c)	solid lubrication
(d)	non-viscous lubrication

Showing 71 to 77 out of 77 Questions