THEORY OF MACHINE QUIZ

A kinematic chain is known as a mechanism when

One of the links is fixed

None of these

Two of the links are fixed

None of the links is fixed

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The Coriolis component of acceleration is taken into account for

Four bar chain mechanism

Quick return motion mechanism

Slider crank mechanism

All of these

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The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

Joining the corresponding points

Perpendicular to line as per (A)

Not possible to determine with these data

At 45° to line as per (A)

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The inversion of a mechanism is

Obtained by reversing the input and output motion

Turning its upside down

Obtained by fixing different links in a kinematic chain

Changing of a higher pair to a lower pair

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For simple harmonic motion of the of follower, a cosine curve represents

Displacement diagram

All of these

Acceleration diagram

Velocity diagram

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A higher pair has__________.

No contact

Point contact

Surface contact

None of these

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In a turning moment diagram, the variations of energy above and below the mean resisting torque line is called

Coefficient of fluctuation of energy

Fluctuation of energy

Maximum fluctuation of energy

None of the listed here

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The advantage of the piston valve over the slide valve is that in the former case

Wear is less

Power absorbed is less

Both wear and power absorbed are low

The pressure developed being high provides tight sealing

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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.

None of these

Maximum

Zero

Minimum

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Carnot cycle is

a reversible cycle

an irreversible cycle

a semi-reversible cycle

a quasi static cycle

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