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Theory of Machine

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

Pantograph
Valve and valve gears
All of these
Gyroscope

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Theory of Machine
In a disc clutch, if there are n₁ number of discs on the driving shaft and n₂ number of discs on the driven shaft, then the number of pairs of contact surfaces will be

n₁ + n₂ - 1
n₁ + n₂ - 2
n₁ + n₂
n₁ + n₂ + 1

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Theory of Machine
For a kinematic chain to be considered as mechanism

There is no such criterion
One link should be fixed
Two links should be fixed
None of the links should be fixed

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Theory of Machine
The motion of a shaft in a circular hole is an example of

None of these
Completely constrained motion
Incompletely constrained motion
Successfully constrained motion

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Theory of Machine
In a locomotive, the maximum magnitude of the unbalanced force along the perpendicular to the line of stroke, is known as

Swaying couple
Hammer blow
None of these
Tractive force

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Theory of Machine
A watt's governor can work satisfactorily at speeds from

100 to 200 r.p.m.
200 to 300 r.p.m.
80 to 100 r.p.m.
60 to 80 r.p.m.

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