THEORY OF MACHINE QUIZ

According to Kennedy's theorem, if three bodies have plane motions, their instantaneous centers lie on A. A triangle

Two lines

A triangle

A straight line

A point

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In a circular arc cam with roller follower, the acceleration in any position of the lift will depend only upon

Mass of cam follower linkage, spring stiffness and cam speed

Total lift, centre of gravity of the cam and cam speed

Total lift, total angle of lift, minimum radius of cam and cam speed

Radius of circular arc, cam speed, location of centre of circular arc and roller diameter

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In a Hartnell governor, the compression of the spring is __________ the lift of the sleeve.

None of these

Greater than

Less than

Equal to

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The inversion of a mechanism is

Changing of a higher pair to a lower pair

Turning its upside down

Obtained by reversing the input and output motion

Obtained by fixing different links in a kinematic chain

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The following is the inversion of slider crank chain mechanism

Hand pump

All of these

Oscillating cylinder engine

Whitworth quick return mechanism

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For a kinematic chain to be considered as mechanism

One link should be fixed

None of the links should be fixed

There is no such criterion

Two links should be fixed

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The example of completely constrained motion is a

Motion of a shaft with collars at each end in a circular hole

All of these

Motion of a square bar in a square hole

Motion of a piston in the cylinder of a steam engine

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Scotch yoke mechanism is used to generate

Logarithms

Square roots

Sine functions

Inversions

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The lower pairs are _________ pairs.

Friction closed

None of these

Force-closed

Self-closed

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Which of the following governor is used to drive a gramophone?

Porter governor

Hartnell governor

Watt governor

Pickering governor

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