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91.

The shape of a suspended cable under its own weight is

A.	Semi-circle	B.	Parabolic
C.	Cycloidal	D.	Elliptical
E.	Catenary

92.

The necessary condition for the forces acting on a body to be in equilibrium is that these should be

A.	In the same direction	B.	Coplaner
C.	Similar in nature	D.	Should not meet at a point
E.	(B) and (D) above

93.

The number of revolutions through which a pulley will rotate from rest if its angular acceleration is increased uniformly from zero to 12 rad per sec2 during 4 sec and then uniformly decreased to 0 rad per sec2 during the next 3 sec would be

A.	3.2	B.	11.6
C.	17.7	D.	26.74
E.	46.4

94.

The angular acceleration of a flywheel decreases uniformly from 8 rad/sec2 to 2 rad sec2 in 6 sec at which time its angular velocity is 42 rad/sec. The initial angular velocity was

A.	3 rad/sec	B.	6 rad/sec
C.	12 rad/sec	D.	24 rad/sec
E.	30 rad/sec

95.

In a torsion pendulum

A.	The body attached to the lower end of wire or rod must be elastic	B.	The clamp must be elastic
C.	The clamp must be elastic	D.	(A) and (B) above
E.	(A), (B) and (C) together

96.

The slope on the road generally provided on the curves is known as

A.	Angle of repose	B.	Angle of friction
C.	Angle of banking	D.	Angle of reaction
E.	None of the above

97.

The ideal angle of banking provided on roads

A.	Depends on the nature of road surface	B.	Depend on coefficient of friction between the road and the vehicle cantact point
C.	Depends on weight of the vehicle	D.	Depends on (velocity)2 of vehicle
E.	All above

98.

The time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m is equal to

A.	2 sec	B.	4 sec
C.	6 sec	D.	8 sec
E.	10 sec

99.

When a train is rounding a curve to prevent side thrust on the wheel flanges of cars

A.	Thrust eliminators are provided in the train	B.	Opposite thrust is created to counter balance this thrust
C.	Rail section is made thick on curvature	D.	Guide rail sections are provided to take care of thrust
E.	Outside rails are realised

100.

The radius of gyration of a solid sphere of radius r is equal to

A.	0.8 r2	B.	0.5 r2
C.	0.4 r2	D.	0.3 r2
E.	0.2 r2