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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is

1.417 H5/2
7.141 H5/2
4.171 H5/2
0.417 H5/2

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Hydraulics and Fluid Mechanics in ME
The increase of temperature results in

decrease in viscosity of gas
decrease in viscosity of liquid
increase in viscosity of gas
increase in viscosity of liquid

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Hydraulics and Fluid Mechanics in ME
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly enlarged to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden enlargement is

(v₁² - v₂²)/g
(v₁² - v₂²)/2g
(v₁ - v₂)²/2g
(v₁ - v₂)²/g

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Hydraulics and Fluid Mechanics in ME
For centrifugal pump impeller, the maximum value of the vane exit angle is

15° to 20°
10° to 15°
25° to 30°
20° to 25°

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Hydraulics and Fluid Mechanics in ME
Which of the following instrument can be used for measuring speed of a submarine moving in deep sea

pitot tube
Venturimeter
rotameter
hot wire anemometer

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Hydraulics and Fluid Mechanics in ME
The flow in which the particles of a fluid attain such velocities that vary from point to point in magnitude and direction as well as from instant to instant, is known as

turbulent flow
uniform flow
steady flow
one dimensional flow

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