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Theory of Machine

Theory of Machine
If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the

0.5
1.5
1
2

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Theory of Machine
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is

None of the listed here
At 45° to PO
Along PO
Perpendicular to PO

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Theory of Machine
The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

0.571/ √δS
0.4985/ √δS
0.6253/ √δS
0.5615/ √δS

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Theory of Machine
The pair is known as a higher pair, when the relative motion between the elements of a pair is

Sliding only
Rolling only
Turning only
Partly turning and partly sliding

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Theory of Machine
If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

One and a half times the first one
Four times the first one
One fourth of the first one
Same as the first one

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Theory of Machine
When one of the links of a kinematic chain is fixed, the chain is known as a

Inversion
Structure
Machine
Mechanism

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