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Fluid Mechanics

Fluid Mechanics
What is the value of Fanning friction factor f ' for smooth pipe at NRe = 10⁶ approximately?

0.1
0.003
0.01
0.3

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Fluid Mechanics
For pipes that must be broken at intervals for maintenance, the connector used should be a/an

Reducer
Elbow
Union
Tee

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Fluid Mechanics
The drag co-efficient for a bacterium moving in water at 1 mm/s, will be of the following order of magnitude (assume size of the bacterium to be 1 micron and kinematic viscosity of water to be 10⁻⁶m²/s).

0.24
24
0.44
24000

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Fluid Mechanics
The peripherial velocity at inlet of a centrifugal pump having inlet diameter of 25 cms and rotating at 950 rpm is __________ m/sec.

186.2
1.8
12.4
736.4

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Fluid Mechanics
Bernoulli's equation is not applicable, when the flow is

Incompressible
Irrotational
Viscous
All of these

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Fluid Mechanics
The variable required to be known in correlations used for estimating the horse power of a centrifugal gas compressor and hence its cost are P. Inlet pressure Q. Compressor rpm R. Delivery pressure S. Volumetric flow rate at inlet.

R and S
P and R
P, Rand S
P, Q and R

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