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Theory of Machine

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

30
10
34
20

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Theory of Machine
An engine operates between temperatures of 900°Kandr2 and another engine between T2 and 400°K For both to do equal work, value of T2 will be

600°K
625°K
650°K
700°K

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

Less
Equal
More
May be less or more depending on efficiency

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Theory of Machine
A point on a link connecting double slider crank chain traces a

Hyperbola
Parabola
Ellipse
Circle

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Theory of Machine
The ratio of maximum fluctuation of energy to the work-done per cycle is called

None of these
Maximum fluctuation of energy
Fluctuation of energy
Coefficient of fluctuation of energy

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Theory of Machine
The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as

Logarithmic decrement
Damping factor
Damping coefficient
Magnification factor

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