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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific speed (Ns) of a centrifugal pump is given by

(N√Q)/H
(N√Q)/H3/4
(N√Q)/H2/3
(N√Q)/H5/4

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Hydraulics and Fluid Mechanics in ME
Which of the following manometer has highest sensitivity

U-tube with mercury
U-tube with water
inclined U-tube
micro-manometer with water

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Hydraulics and Fluid Mechanics in ME
The ratio of the inertia force to the viscous force is called

Euler's number
Froude's number
Weber's number
Reynold's number

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Hydraulics and Fluid Mechanics in ME
Which of the following is an example of laminar flow?

Flow of oil in measuring instruments
Flow past tiny bodies
Underground flow
All of these

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Hydraulics and Fluid Mechanics in ME
In a venturi-flume, the flow takes place at

None of these
Gauge pressure
Atmospheric pressure
Absolute pressure

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Hydraulics and Fluid Mechanics in ME
An impulse turbine is used for

High head of water
Medium head of water
High discharge
Low head of water

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