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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

Incompressible
None of these
Viscous
Compressible

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Hydraulics and Fluid Mechanics in ME
The power developed by a turbine is (where H = Head of water under which the turbine is working)

Inversely proportional to H3/2
Inversely proportional to H1/2
Directly proportional to H3/2
Directly proportional to H1/2

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Hydraulics and Fluid Mechanics in ME
The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called

buoyancy
reaction
upthrust
metacentre

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Hydraulics and Fluid Mechanics in ME
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by

Designing new impeller
Not possible
Trimming the impeller size to the required size by machining
Some other alterations in the impeller

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Hydraulics and Fluid Mechanics in ME
The specific weight of water is 1000 kg/m”

at 4°C temperature
at mean sea level
at normal pressure of 760 mm
All listed here

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Hydraulics and Fluid Mechanics in ME
One horsepower is equal to

102 watts
735 watts
550 watts
75 watts

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