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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.5
0.6667
0.7666
0.567

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

kg sec/meter
metres² per sec
newton-sec per meter
newton-sec² per meter

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Hydraulics and Fluid Mechanics in ME
The center of pressure of a surface subjected to fluid pressure is the point

at which all hydraulic forces meet
on the surface at which gravitational force acis
on the surface at which resultant pres-sure acts
similar to metacentre

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Hydraulics and Fluid Mechanics in ME
Specific speed for reaction turbines ranges from

80 to 200
250 to 300
10 to 100
0 to 4.5

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Hydraulics and Fluid Mechanics in ME
With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension will

Remain unchanged
Depend upon the characteristics of liquid
Increase
Decrease

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of circular section will be maximum when the depth of water is __________ the diameter of the circular channel.

0.81 times
0.95 times
0.34 times
0.67 times

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