Theory of Machine
Which of the following is an inversion of Single slider crank chain?

Oldham’s coupling
Elliptical trammel
Rotary engine
Beam engine

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Theory of Machine
A point B on a rigid link AB moves with respect to A with angular velocity ω rad/s. The total acceleration of B with respect to A will be equal to

Vector sum of radial component and tangential component
Vector difference of radial component and tangential component
Vector sum of radial component and Coriolis component
Vector sum of tangential component and Coriolis component

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Theory of Machine
Crowning on pulleys helps

Increase belt and pulley life
For automatic adjustment of belt position so that belt runs centrally
In decreasing the slip of the belt
In increasing velocity ratio

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Theory of Machine
Angle of descent of cam is defined as the angle

Moved by the cam from the instant the follower begins to rise, till it reaches its highest position
During which the follower returns to its initial position
Of rotation of the cam for a definite displacement of the follower
Through which the cam rotates during the period in which the follower remains in the highest position

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