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Fluid Mechanics

Fluid Mechanics
Volume of liquid displaced by a floating body is equivalent to its

Own weight
Submerged volume
Submerged weight
Own volume

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Fluid Mechanics
Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m³, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is

30
45
60
90

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

Remain same
Increase
Unpredictable
Decrease

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Fluid Mechanics
The fluid in which the shearing stress within it is proportional to the velocity gradient across the sheared section, is called a __________ fluid.

Perfect
None of these
Newtonion
Bingham

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Fluid Mechanics
The pressure drop per unit length of pipe incurred by a fluid 'X' flowing through pipe is Δp. If another fluid 'Y' having both the specific gravity & density just double of that of fluid 'X', flows through the same pipe at the same flow rate/average velocity, then the pressure drop in this case will be

Δp
2Δp
Δp/2
Δp²

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Fluid Mechanics
The temperature in isentropic flow

Cannot drop and then increase again downstream
Depends on Mach number only
None of these
Does not depend on Mach number

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