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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.

Different
Product
Sum
Ratio

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Hydraulics and Fluid Mechanics in ME
If the net positive suction head (NPSH) requirement for the pump is not satisfied, then

Efficiency will be low
Cavitation will be formed
Excessive power will be consumed
No flow will take place

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Hydraulics and Fluid Mechanics in ME
A vertical wall is subjected to a pressure due to one kind of liquid, on one of its sides. The total pressure on the wall acts at a distance __________ from the liquid surface.

H/2
2H/3
3H/4
H/3

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Hydraulics and Fluid Mechanics in ME
The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately

20 mm
10 mm
5 mm
30 mm

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Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece is

0.375
0.707
0.855
0.5

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Hydraulics and Fluid Mechanics in ME
If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be

wh
h/w
h
w/h

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