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Theory of Machine

Theory of Machine
The frequency of damped vibrations with viscous damping is ________ the frequency of undamped vibrations.

None of these
More than
Same as
Less than

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Theory of Machine
In a reciprocating engine, usually __________ of the reciprocating masses are balanced.

Three-fourth
Whole
Two-third
One-half

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Theory of Machine
The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.

Sum
Difference
Product
Ratio

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Theory of Machine
The brake commonly used in railway trains is

Band brake
Internal expanding brake
Band and block brake
Shoe brake

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Theory of Machine
Coriolis component is encountered in

Both (A) and (C) above
Quick return mechanism of shaper
Four bar chain mechanism
Slider crank mechanism

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Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

30
20
34
10

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