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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 vertical lift and very little pipe friction, the pump characteristics should be

First rise and then fall
Horizontal
Nearly horizontal
Steep

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Hydraulics and Fluid Mechanics in ME
The pressure of fluid due to hammer blow is

Directly proportional to density of fluid
Directly proportional to (density)1/2 of fluid
Inversely proportional to (density)1/2 of fluid
Inversely proportional to density of fluid

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Hydraulics and Fluid Mechanics in ME
The liquid used in manometers should have

Low surface tension
High surface tension
Low density
High density

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Hydraulics and Fluid Mechanics in ME
According to Bernoulli's equation

Z + p/w - v²/2g = constant
Z + p/w + v²/2g = constant
Z - p/w + v²/2g = constant
Z - p/w - v²/2g = constant

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Hydraulics and Fluid Mechanics in ME
The discharge through a channel of rectangular section will be maximum, if

Its breadth is thrice the depth
Its depth is twice the breadth
Its breadth is twice the depth
Its depth is thrice the breadth

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Hydraulics and Fluid Mechanics in ME
Centrifugal pump is started with its delivery valve

Kept fully open
Kept fully closed
Kept 50% open
Irrespective of any position

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