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Fluid Mechanics

Fluid Mechanics
The unit of dynamic viscosity in SI unit is

kg/m . sec
m² /sec
m/N. sec
N/m²

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Fluid Mechanics
Foot valves are provided in the suction line of a centrifugal pump to

Remove the contaminant present in the liquid
Control the liquid discharge
Minimise the fluctuation in discharge
Avoid priming, every time we start the pump

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Fluid Mechanics
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.

0.04πgH/3
4πg/3
0.01πgH/8
0.01πgH/4

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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.

Newtonion
Bingham
Perfect
None of these

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Fluid Mechanics
Cp/Cv is termed as

Mach number
Adiabatic constant
Weber number
Prandtl number

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Fluid Mechanics
Curve III in the above diagram represents a/an

None of these
Ideal plastic
Dilatent fluid
Pseudo plastic fluid

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