Theory of Machine
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

W CE / 2CS
2 W CE / CS
W CE / CS
W CS / 2CE

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Theory of Machine
In elliptical trammels

All four pairs are turning
One pair turning and three pairs sliding
Two pairs turning and two pairs sliding
Three pairs turning and one pair sliding

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Theory of Machine
In a hydrodynamic journal bearing, there is

A forced lubricant between the journal and the bearing
A thick film of lubricant between the journal and the bearing
A very thin film of lubricant between the journal and the bearing such that there is contact between the journal and the bearing
No lubricant between the journal and the bearing

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