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Fluid Mechanics

Fluid Mechanics
Unit of mass velocity is

Kg/m³. hr
Kg/m²
Kg/hr
Kg/m². hr

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

1 N
0 N/m
∞ N/m²
5 kg/m³

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Fluid Mechanics
The bulk modulus of elasticity of a liquid

Is zero for incompressible liquid
Is independent of temperature & pressure
Increases with pressure
Decreases with pressure

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

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

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Fluid Mechanics
Velocity of liquid hydrocarbon fuels in a pipeline can not be measured by magnetic flowmeters, because their __________ is very low/small.

Electrical resistivity
Electrical conductivity
Specific gravity
Thermal conductivity

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Fluid Mechanics
Boundary layer thickness in laminar flow over a flat plate increases as(where, d = distance from the leading edge.)

d1/3
√d
d2
d2/3

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