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Fluid Mechanics

Fluid Mechanics
Boiler feed water pump is usually a __________ pump.

Multistage centrifugal
Reciprocating
Gear
Diaphragm

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Fluid Mechanics
Which of the following is not a dimension-less parameter?

Euler number
Specific gravity
None of these
Fanning friction factor

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Fluid Mechanics
Unit of mass velocity is

Kg/m³. hr
Kg/hr
Kg/m². hr
Kg/m²

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Fluid Mechanics
Interstage coolers are provided in a multistage compressor to

Save power in compressing a given volume to a given pressure
Cool the delivered air
Achieve the exact delivery pressure
None of these

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Fluid Mechanics
Choose the set of pressure intensities that are equivalent.

4.33 psi, 10 ft. of water, 8.83 inches of Hg
4.33 psi, 10 ft. of water, 20.7 inches of Hg
10 psi, 19.7 ft. of water, 5.3 inches of Hg
10 psi, 19.7 ft. of water, 23.3 inches of Hg

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Fluid Mechanics
For an incompressible fluid, the bulk modulus of elasticity is

1 N
∞ N/m²
0 N/m
5 kg/m³

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