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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m”

at normal pressure of 760 mm
All listed here
at 4°C temperature
at mean sea level

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Hydraulics and Fluid Mechanics in ME
Liquids

Are not affected by change in pressure and temperature
None of the listed here
Occupy definite volume
Cannot be compressed

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Hydraulics and Fluid Mechanics in ME
For very great pressures, viscosity of moss gases and liquids

remains same
decreases
shows erratic behaviour
increases

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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

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

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Hydraulics and Fluid Mechanics in ME
The flow in which conditions do not change with time at any point, is known as

uniform flow
one dimensional flow
steady flow
turbulent flow

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

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

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