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Theory of Machine

Theory of Machine
The relative velocity of B with respect to A in a rigid link AB is

At 45° to AB
Perpendicular to AB
Parallel to AB
Along AB

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Theory of Machine
The magnitude of linear velocity of a point B on a link AB relative to point A is, (Where ω = Angular velocity of the link AB)

ω × (AB)²
ω × AB
(ω × AB)²
ω² × AB

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Theory of Machine
Which of the following mechanism is obtained from lower pair?

Gyroscope
Valve and valve gears
All of these
Pantograph

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Theory of Machine
When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as

Torsional pendulum
Compound pendulum
Second's pendulum
Simple pendulum

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Theory of Machine
The two elements of a pair are said to form a higher pair, when they

Are kept in contact by the action of external forces, when in motion
Permit relative motion
Have a line or point contact when in motion
Have a surface contact when in motion

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Theory of Machine
The stress induced in a body will be shear stress, when it is subjected to

Transverse vibrations
Torsional vibrations
Longitudinal vibrations
None of these

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