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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

ω²v
ωv
2ωv²
2ωv

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Theory of Machine
The two elements of a pair are said to form a _________ when they permit relative motion between them.

Kinematic pair
Open pair
Sliding pair
None of these

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Theory of Machine
A pulley and belt in a belt drive form a

Turning pair
Sliding pair
Cylindrical pair
Rolling pair

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Theory of Machine
In order to balance the reciprocating masses,

None of these
Primary forces and couples must be balanced
Both (A) and (B)
Secondary forces and couples must be balanced

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Theory of Machine
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft, and I = Mass moment of inertia of the disc attached at the end of a shaft)

(1/2π). √(q/I)
1/2π
2π. √(q/I)
2π qI

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Theory of Machine
If the damping factor for a vibrating system is unity, then the system will be

Over damped
Under damped
Critically damped
Without vibrations

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