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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Free surface of a liquid tends to contract to the smallest possible area due to force of

friction
viscosity
cohesion
surface tension

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Hydraulics & Fluid Mechanics
The resultant of all normal pressures acts

at e.g. of body
at center of pressure
vertically upwards
at metacentre

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Hydraulics & Fluid Mechanics
A fluid is said to be ideal, if it is

inviscous and compressible
inviscous
incompressible
inviscous and incompressible

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Hydraulics & Fluid Mechanics
Which of the following is demensionless

specific volume
specific gravity
specific weight
specific speed

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Hydraulics & Fluid Mechanics
The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid (where pi and p2 are mass densities.)

uniform flow
frictionless flow
incompressible flow
steady flow

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Hydraulics & Fluid Mechanics
Coefficient of velocity for Borda’s mouth piece running full is

0.707
1.00
0.855
0.611

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