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Fluid Mechanics

Fluid Mechanics
In Newton's law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is

44
4.4
0.044
0.44

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Fluid Mechanics
Reynolds number for water flow through a tube of I.D. 5 cm is 1500. If a liquid of 5 centipoise viscosity and 0.8 specific gravity flows in the same pipe at the same velocity, then the pressure drop will

Data insufficient to predict pressure drop
Decrease
Remain same
Increase

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Fluid Mechanics
With increase in molecular weight of the gas, the head developed by a centrifugal compressor will

Decrease
Unpredictable
Remain same
Increase

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Fluid Mechanics
For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

G is above B
None of these
B is above G
B & G coincide

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Fluid Mechanics
Cp/Cv is termed as

Adiabatic constant
Mach number
Prandtl number
Weber number

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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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