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Theory of Machine

Theory of Machine
In S.H.M., the velocity vector w.r.t. displacement vector

Lags by 90°
Leads by 180°
Are in phase
Leads by 90°

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

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Theory of Machine
The number of centers in a crank driven slider crank mechanism is

2
4
6

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Theory of Machine
The power transmitted by a belt is maximum when the maximum tension in the belt is _________ of centrifugal tension.

Two-third
One-third
Three times
Double

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Theory of Machine
The velocity of a body moving with simple harmonic motion is __________ at the mean position.

None of these
Zero
Maximum
Minimum

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Theory of Machine
A rigid body possesses ________degrees of freedom

One
Six
Four
Two

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