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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
For starting an axial flow pump, its delivery valve should be

Could be either open or closed
Closed
Depends on starting condition and flow desired
Open

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Hydraulics and Fluid Mechanics in ME
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

More than
None of these
Same as
Less than

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Hydraulics and Fluid Mechanics in ME
The pressure less than atmospheric pressure is known as

Negative gauge pressure
All of the listed here
Suction pressure
Vacuum pressure

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Hydraulics and Fluid Mechanics in ME
A pressure of 25 m of head of water is equal to

2.5 kN/m2
25 kN/m2
245 kN/m2
2500 kN/m2

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Hydraulics and Fluid Mechanics in ME
During the opening of a valve in a pipe line, the flow is

Unsteady
Steady
Uniform
Laminar

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

6 kN/m3
7.5 kN/m3
4.5 kN/m3
10 kN/m3

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