Hydraulics and Fluid Mechanics - Mechanical Engineering Questions and Answers

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The length of a liquid stream while flowing over a weir __________ at the ends of the sill.

expands

does not change

contracts

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Select the wrong statement

An equivalent pipe is treated as an ordinary pipe for all calculations

The length of an equivalent pipe is equal to that of a compound pipe

The discharge through an equivalent pipe is equal to that of a compound pipe

The diameter of an equivalent pipe is equal to that of a compound pipe

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The velocity through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.34 times

0.67 times

0.81 times

0.95 times

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In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

double

four times

eight times

sixteen times