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FLUID MECHANICS

Fluid Mechanics
In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)

1.5 Vavg
1.2 Vavg
1.8 Vavg
Vavg

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Fluid Mechanics
For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter)

Vs²/Dp²
Vs/Dp²
Vs²/Dp³
Vs/Dp³

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Fluid Mechanics
The equation given below is called the __________ . f-0.5 = 4.07 loge (NRe√f)-0.6

Fanning equation
Colebrook formula
None of these
Von-Karman equation

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Fluid Mechanics
The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop fo __________ fluid.

Pseudoplastic
Newtonion
Dilatant
Bingham plastic

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Fluid Mechanics
Permanent loss in a venturimeter is about __________ percent of the pressure drop in theupstream cone.

1
70
10
40

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