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Hydraulics and Fluid Mechanics in ME

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
w/h
h/w
wh

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Hydraulics and Fluid Mechanics in ME
In a Kaplan turbine runner, the numbers of blades are generally between

4 to 8
8 to 16
2 to 4
16 to 24

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Hydraulics and Fluid Mechanics in ME
If cohesion between molecules of a fluid is greater than adhesion between fluid and glass, then the free level of fluid in a dipped glass tube will be

Lower than the surface of liquid
Higher than the surface of liquid
The same as the surface of liquid
Unpredictable

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
greater than 4
greater than 2
unity

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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.

More than
Equal to
None of these
Less than

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Hydraulics and Fluid Mechanics in ME
A double overhung Pelton wheel has

Two runners
Four runners
Four jets
Two jets

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