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Hydraulics and Fluid Mechanics in ME

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

Five times
Double
Three times
Four times

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Hydraulics and Fluid Mechanics in ME
The coefficient of viscosity may be determined by

All of these
Capillary tube method
Orifice type viscometer
Rotating cylinder method

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Hydraulics and Fluid Mechanics in ME
Which of the following is dimensionless?

Specific volume
Specific weight
Specific gravity
Specific speed

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Hydraulics and Fluid Mechanics in ME
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

7.141 H5/2
4.171 H5/2
1.417 H5/2
0.417 H5/2

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Hydraulics and Fluid Mechanics in ME
The boundary layer thickness at a distance of l m from the leading edge of a flat plate, kept at zero angle of incidence to the flow direction, is O.l cm. The velocity outside the boundary layer is 25 ml sec. The boundary layer thickness at a distance of 4 m is (Assume that boundary layer is entirely laminar)

0.10 cm
0.20 cm
0.05 cm
0.40 cm

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Hydraulics and Fluid Mechanics in ME
A weir is said to be narrow-crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.

Less than
Equal to
None of these
More than

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