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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

Nearly horizontal
First rise and then fall
Horizontal
Steep

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Hydraulics and Fluid Mechanics in ME
Reaction turbines are used for

Low head
High head
Low head and high discharge
High head and low discharge

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. The saving in case of a double acting reciprocating pump is

0.848
0.488
0.884
0.392

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine ___ with the increase in unit speed.

Increases
Remain same
Decreases
None of the listed here

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Hydraulics and Fluid Mechanics in ME
The maximum efficiency of transmission through a pipe is

0.7666
0.5
0.6667
0.567

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Hydraulics and Fluid Mechanics in ME
The centre of pressure acts __________ the centre of gravity of immersed surface.

Below
None of these
Above
At

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