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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Operation of McLeod gauge used for low pressure measurement is based on the principle of

Charle’s law
Pascal’s law
Boyle’s law
gas law

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

1.00
0.855
0.707
0.611

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

cohesion
surface tension
friction
viscosity

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Hydraulics & Fluid Mechanics
In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is

40 M/SEC
22.5 M/SEC
50 M/SEC
33 M/SEC

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Hydraulics & Fluid Mechanics
Normal depth in open channel flow is the depth of flow corresponding to

uniform flow
Steady flow
unsteady flow
laminar flow

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Hydraulics & Fluid Mechanics
The line of action of the buoyant force acts through the centroid of the

submerged body
volume of the fluid vertically above the body
volume of the floating body
displaced volume of the fluid

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