Theory of Machine
In a steam engine, the distance by which the outer edge of the D-slide valve overlaps the steam port is called

Steam lap
None of these
Lead
Exhaust lap

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Theory of Machine
The maximum fluctuation of energy is the

Sum of the maximum and minimum energies
Difference between the maximum and minimum energies
Ratio of the mean resisting torque to the work-done per cycle
Variations of energy above and below the mean resisting torque line

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