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Theory of Machine

Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

cosφ
sinφ
secφ
cosecφ

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Theory of Machine
When a point at the end of a link moves with constant angular velocity, its acceleration will have

Radial component only
Tangential component only
Radial and tangential components both
Coriolis component only

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Theory of Machine
The secondary unbalanced force is __________ the primary unbalanced force.

n times
Two-third
One-half
1/n times

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Theory of Machine
The example of completely constrained motion is a

Motion of a shaft with collars at each end in a circular hole
Motion of a square bar in a square hole
All of these
Motion of a piston in the cylinder of a steam engine

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Theory of Machine
The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

Both A and B
Perpendicular
Parallel
None of these

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Theory of Machine
The number of links and instantaneous centers in a reciprocating engine mechanism are

4, 5
4, 4
5, 4
4, 6

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