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Theory of Machine

Theory of Machine
The number of centers in a crank driven slider crank mechanism is

6
4
2

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Theory of Machine
The minimum force required to slide a body of weight W on a rough horizontal plane is

W cosecθ
W tanθ
W cosθ
W sinθ

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Theory of Machine
In a shaper mechanism, the Coriolis component of acceleration will

Depend on position of crank
Not exist
None of these
Exist

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Theory of Machine
Which of the following is a turning pair?

Piston and cylinder of a reciprocating steam engine
Lead screw of a lathe with nut
Shaft with collars at both ends fitted into a circular hole
Ball and a socket joint

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Theory of Machine
The unbalanced force due to revolving masses

Varies in magnitude but constant in direction
Varies in magnitude and direction both
Varies in direction but constant in magnitude
Constant in magnitude and direction both

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Theory of Machine
The periodic time of a compound pendulum is __________ when the distance between the point of suspension and the center of gravity is equal to the radius of gyration of the body about its center of gravity.

Maximum
Minimum
None of these
Zero

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