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Theory of Machine

Theory of Machine
In a shaper mechanism, the Coriolis component of acceleration will

Exist
Depend on position of crank
Not exist
None of these

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Theory of Machine
When the sleeve of a Porter governor moves downwards, the governor speed

Increases
Remain unaffected
Decreases
First increases and then decreases

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Theory of Machine
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

Unstable
Stable
Isochronous
None of these

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Theory of Machine
The danger of breakage and vibration is maximum

None of these
Near the critical speed
Below the critical speed
Above the critical speed

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Theory of Machine
The two elements of a pair are said to form a higher pair, when they

Have a line or point contact when in motion
Permit relative motion
Have a surface contact when in motion
Are kept in contact by the action of external forces, when in motion

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Theory of Machine
In order to double the period of a simple pendulum, the length of the string should be

Doubled
Halved
None of these
Quadrupled

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