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Theory of Machine

Theory of Machine
With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by

2E²CS
EC S/2
2ECS²
2ECS

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Theory of Machine
Critical damping is a function of

Damping coefficient and natural frequency
Mass and damping coefficient
Mass and stiffness
Mass and natural frequency

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Theory of Machine
Which one of the following can completely balance several masses revolving in different planes on a shaft?

A single mass in different planes
Two masses in any two planes
A single mass in one of the planes of the revolving masses
Two equal masses in any two planes

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Theory of Machine
The effort of a Porter governor is equal to (where c = Percentage increase in speed, m = Mass of ball, and M = Mass on the sleeve)

c (m + M) g
c/(m + M) g
c/(m - M) g
c (m - M) g

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Theory of Machine
In a four stroke I.C. engine, the turning moment during the compression stroke is

Negative throughout
Positive during major portion of the stroke
Positive throughout
Negative during major portion of the stroke

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Theory of Machine
To connect two parallel and coplanar shafts the following type of gearing is used

Bevel gear
Spur gear
Spiral gear
None of the listed here

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