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Theory of Machine

Theory of Machine
In an ideal machine, the output as compared to input is

More
Equal
May be less or more depending on efficiency
Less

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Theory of Machine
In gramophones for adjusting the speed of the turntable, the following type of governor is commonly employed

Inertia governor
Pickering governor
Hartung governor
Wilson Hartnell governor

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Theory of Machine
The instantaneous centers which vary with the configuration of mechanism are called

None of these
Neither fixed nor permanent instantaneous centers
Fixed instantaneous centers
Permanent instantaneous centers

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Theory of Machine
Frequency of vibrations is usually expressed in

None of these
Number of cycles per second
Number of cycles per minute
Number of cycles per hour

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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

Torsional vibrations
All of these
Transverse vibrations
Longitudinal vibrations

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Theory of Machine
The Hooke's joint consists of:

Four forks
Two forks
One fork
Three forks

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