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Theory of Machine

Theory of Machine
A slider moves at a velocity v on a link revolving at ω rad/s. The coriolis component of acceleration is

2ωv²
ωv
2ωv
ω²v

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

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

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

Slightly less than 95 mm
95 mm
Slightly more than 95 mm
45 mm

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Theory of Machine
One end of a helical spring is fixed while the other end carries the load W which moves with simple harmonic motion. The frequency of motion is given by (where δ = Deflection of the spring)

1/2π. √(g/δ)
2π. √(δ/g)
1/2π. √(δ/g)
2π. √(g/δ)

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Theory of Machine
The behaviour of gases can be fully determined by

3 laws
1 law
2 laws
4 laws

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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

All of these
Transverse vibrations
Torsional vibrations
Longitudinal vibrations

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