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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

viscosity
surface tension forces
air resistance
atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
The angle of taper on draft tube is

Less than 8°
Greater than 5°
Greater than 8°
Greater than 15°

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Hydraulics and Fluid Mechanics in ME
When time of closure tc = L/v0 (where L is length of pipe and v0 is speed of pressure wave), the portion of pipe length subjected to maximum head is

L/3
L/2
L
L/4

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

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Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

Inversely proportional to N²
Inversely proportional to N
Directly proportional to N²
Directly proportional to N

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Hydraulics and Fluid Mechanics in ME
According to fan laws, at constant speed and capacity, the pressure and power vary

Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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