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Theory of Machine

Theory of Machine
The minimum force required to slide a body of weight W on a rough horizontal plane is

W cosecθ
W tanθ
W sinθ
W cosθ

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Theory of Machine
The Klein's diagram is useful to find

Velocity of various parts
Acceleration of various parts
Displacement of various parts
Angular acceleration of various parts

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Theory of Machine
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

Longitudinal vibrations
All of these
Transverse vibrations
Torsional vibrations

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Theory of Machine
A mechanism is an assemblage of

Two links
Four or more than four links
Three links
All of these

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

Wear is less
The pressure developed being high provides tight sealing
Both wear and power absorbed are low
Power absorbed is less

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Theory of Machine
The number of links in pantograph mechanism is equal to

4
3
5
2

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