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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The stability of a dam is checked for

Tension at the base
Overturning of the wall or dam
All of these
Sliding of the wall or dam

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant speed and capacity, the pressure and power vary

Inversely as density
As square of density
Inversely as square root of density
Directly as the air or gas density

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit speed of the wheel is

40 r.p.m.
20 r.p.m.
10 r.p.m.
80 r.p.m.

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Hydraulics and Fluid Mechanics in ME
The absolute pressure is equal to

Atmospheric pressure - gauge pressure
Gauge pressure - atmospheric pressure
Gauge pressure - vacuum pressure
Gauge pressure + atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
Dimensions of surface tension are

ML r²
ML°T
ML²T²
ML°T⁻²

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Hydraulics and Fluid Mechanics in ME
One poise is equal to

100 N-s/m2
10 N-s/m2
0.1 N-s/m2
1 N-s/m2

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