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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is

4
43924
2
1

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of rectangular section will be maximum, if

Its depth is twice the breadth
Its breadth is thrice the depth
Its depth is thrice the breadth
Its breadth is twice the depth

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Hydraulics and Fluid Mechanics in ME
Which of the following turbine is preferred for a specific speed of 60 to 300 r.p.m.?

Kaplan turbine
Pelton wheel
None of these
Francis turbine

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Hydraulics and Fluid Mechanics in ME
The pressure intensity in kN/m2 (or kPa) at any point in a liquid is (where w = Specific weight of liquid, and h = Depth of liquid from the surface)

w/h
w
h/w
wh

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Hydraulics and Fluid Mechanics in ME
The discharge over the trapezoidal notch is equal to the discharge over the rectangular notch __________ the discharge over the triangular notch.

None of these
Plus
Divide
Minus

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Hydraulics and Fluid Mechanics in ME
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

Zero
Minimum
Maximum
Could be any value

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