1.)What is hydraulic jump ?
Ans: It is a natural phenomenon in open channel. It is an abrupt
reduction in flow velocity by means of a sudden increase of water depth
in the down stream direction. Through a hydraulic jump, and high-velocity supercritical flow is changed to a low velocity subcritical flow.
2.)What is conicity ?
Ans: The ratio of the difference in diameter of the taper to its length is termed conicity.
3.)On what parameters the head developed by a centrifugal pump depends ?
Ans: It depends upon the impeller diameter and its rotative speed.
4.)What is the difference between dressing and trueing of a grinding wheel ?
Ans: Dressing is the process used to clear the cutting surface of the
grinding wheel of any dull grits and embedded swarf in order to improve
the cutting action. Trueing is the process employed to bring the wheel
to the required geometric shop and also to restore the cutting action of
a worn wheel.
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