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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The ratio of absolute viscosity to mass density is known as

coefficient of viscosity
specific viscosity
viscosity index
kinematic viscosity

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Hydraulics and Fluid Mechanics in ME
An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be

10 kN/m2
4 kN/m2
12 kN/m2
14 kN/m2

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Hydraulics and Fluid Mechanics in ME
The eddy viscosity for turbulent flow is

a function of temperature only
dependent on the flow
independent of the flow
a physical property of the fluid.

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Hydraulics and Fluid Mechanics in ME
The diameter of the nozzle (d) for maximum transmission of power is given by (where D = Diameter of pipe, f = Darcy’s coefficient of friction for pipe, and l = Length of pipe)

d = (D⁵/8fl)1/4
d = (D⁵/8fl)1/2
d = (D⁵/8fl)1/5
d = (D⁵/8fl)1/3

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Hydraulics and Fluid Mechanics in ME
Which of the following is not a reaction turbine?

Journal turbine
Pelton wheel
Fourneyron turbine
Thomson's turbine

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Hydraulics and Fluid Mechanics in ME
One horsepower is equal to

550 watts
75 watts
102 watts
735 watts

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