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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
In a footstep bearing, if the radius of the shaft is doubled, then the torque required to overcome the viscous resistance will be

Sixteen times
Four times
Eight times
Double

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Hydraulics and Fluid Mechanics in ME
The number of buckets on the periphery of a Pelton wheel is given by

(D/2d) + 5
(D/2d) + 15
(D/2d) + 20
(D/2d) + 10

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Hydraulics and Fluid Mechanics in ME
Water is _________ liquid.

A compressible
None of these
Both A and B
An incompressible

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Hydraulics and Fluid Mechanics in ME
The angle of taper on draft tube is

Less than 8°
Greater than 5°
Greater than 15°
Greater than 8°

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Hydraulics and Fluid Mechanics in ME
The depth of the bucket for a Pelton wheel is generally _________ the diameter of jet.

1.2 times
Double
Equal to
1.8 times

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Inversely proportional to (density)1/2 of fluid
Directly proportional to density of fluid
Directly proportional to (density)1/2 of fluid
Inversely proportional to density of fluid

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