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81.

Timing belt

A.	Have no slip	B.	Have maximum slip during starting
C.	Slip in proportion to the time of operation	D.	Are used to determine the life time of a belt
E.	None of the above

82.

In case of V-belts

A.	Belts should touch the bottom of groove in pulley	B.	Belts should not touch the bottom of groove in pulley
C.	Grooves in pulley are generally wider than the belt	D.	The efficiency of transmission is less
E.	Tension in belt remains constant throughout

83.

The belt drive can transmit maximum power when maximum total tension in belt equals

A.	Centrifugal tension	B.	Twise the centrifugal tension
C.	Thrice the centrifugal tension	D.	Four times the centrifugal tension
E.	None of the above

84.

The pitch circle of a cam is

A.	The smallest circle drawn to the pitch curve from the centre of rotation of curve	B.	The smallest circle drawn to the cam profile from the centre of rotation of a radial cam
C.	The circle fitting in cam profile	D.	The circle with centre as the centre of cam axis and radius such that it passes through the pitch point
E.	None of the above

85.

The pitch point on a cam is

A.	Any point on pitch curve	B.	The point on cam pitch circle having the maximum pressure angle
C.	Any point on pitch curve	D.	A point at a distance equal to pitch circle radius from the centre
E.	None of the above

86.

The cam angle is

A.	The angle of rotation of the cam for a definite displacement of the follower	B.	Angle subtended by live portion of cam at the cam centre
C.	The angle subtended at the cam centre by the portion of cam during which the follower moves	D.	The angle subtended by the cam at the cam centre when the follower dwells
E.	None of the above

87.

The prime circle of a cam is

A.	The smallest circle drawn to the pitch curve from the centre of rotation of curve	B.	The smallest circle drawn to the cam profile from the centre of rotation of a radial cam
C.	The circle with centre as the centre of cam axis and radius such that it passes through the pitch point	D.	The circle fitting in cam profile
E.	None of the above

88.

Kinetic friction is

A.	That which occurs when there is no motion	B.	That occurs on dry surfaces only
C.	Less than maximum static friction	D.	Is always more than peak static friction
E.	Is equal to the static friction

89.

The moment of friction with the assumption of uniform wear to uniform pressure is

90.

Klein's construction can be used when

A.	Crank has a uniform angular velocity	B.	Crank has a uniform angular acceleration
C.	Crank has a non-uniform angular velocity	D.	(A) and (B) above
E.	(A) and (C) above