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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is

0.83
0.3
0.4
0.6

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Hydraulics and Fluid Mechanics in ME
In a venturi-flume, the flow takes place at

Absolute pressure
Atmospheric pressure
Gauge pressure
None of these

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Hydraulics and Fluid Mechanics in ME
Geometric similarity is said to exist between the model and the prototype, if both of them

Have identical forces
Are identical in shape, but differ only in size
Have identical velocities
Are equal in size and shape

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Hydraulics and Fluid Mechanics in ME
The flow ratio in case of Francis turbine varies from

1 to 1.5
0.4 to 0.5
0.6 to 0.9
0.15 to 0.3

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Hydraulics and Fluid Mechanics in ME
The pitot tube is used to measure

stagnation pressure
dynamic pressure
static pressure
velocity at stagnation point

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Hydraulics and Fluid Mechanics in ME
In centrifugal pumps, maximum efficiency is obtained when the blades are

Bent forward
Straight
Radial
Bent backward

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