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Fluid Mechanics

Fluid Mechanics
In case of supersonic flow of a fluid through pipeline, the 'Mach number' is

1
< 1
> 1

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

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

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Fluid Mechanics
The capacity of an accumulator is the maximum

Discharge which it can deliver
None of these
Liquid which it can store
Energy which it can store

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Fluid Mechanics
Pumping of a corrosive liquid is generally preferred to be done by a __________ pump, as it can be made of a variety of materials including plastics.

Piston
Sump
Gear
Positive displacement

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Fluid Mechanics
Reynolds number for flow of water at room temperature through 2 cm dia pipe at an average velocity of 5 cm/sec is around

2000
100
1000
10

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

d4/5
d1/3
d2/3
√d

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