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Theory of Machine

Theory of Machine
If there are L number of links in a mechanism, then number of possible inversions is equal to

L - 1
L + 1
L + 2
L

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Theory of Machine
A ball and a socket forms a

Spherical pair
Rolling pair
Turning pair
Screw pair

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Theory of Machine
Which of the following is an inversion of a single slider crank chain?

All of these
Rotary internal combustion engine
Oscillating cylinder engine
Pendulum pump

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Theory of Machine
The natural frequency of free longitudinal vibrations is equal to (where m = Mass of the body, s = Stiffness of the body, and δ = Static deflection of the body)

1/2π × √(s/m)
0.4985/√δ
1/2π × √(g/δ)
Any one of the listed here

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Theory of Machine
The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.

None of these
Equal to
Greater than
Less than

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Theory of Machine
The dynamic friction is the friction experienced by a body, when the body

Is at rest
None of these
Just begins to slide over the surface of the other body
Is in motion

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