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Hydraulics and Fluid Mechanics in ME

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

Low density
High density
Low surface tension
High surface tension

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Hydraulics and Fluid Mechanics in ME
The overall efficiency for a Pelton wheel lies between

0.75 to 0.85
0.50 to 0.65
0.65 to 0.75
0.85 to 0.90

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Hydraulics and Fluid Mechanics in ME
For hypersonic flow, the Mach number is

greater than unity
greater than 4
unity
greater than 2

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Hydraulics and Fluid Mechanics in ME
A square surface 3 m × 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is

18,000 kg
9,000 kg
13,500 kg
27,000 kg

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Hydraulics and Fluid Mechanics in ME
Two pipe systems can be said to be equivalent, when the following quantites are same

friction factor and diameter
length and diameter
friction loss and flow
flow and length

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Hydraulics and Fluid Mechanics in ME
The Thomson's turbine is _________ reaction turbine.

An inward flow
A mixed flow
An axial flow
An outward flow

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