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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The region between the separation streamline and the boundary surface of the solid body is known as

drag
boundary layer
wake
lift

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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
33 M/SEC
50 M/SEC

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Hydraulics & Fluid Mechanics
For a floating body to be in stable equilibrium, its metacentre should be

above the center of gravity.
between e.g. and center of pressure
below the center of buoyancy
above the center of buoyancy

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Hydraulics & Fluid Mechanics
The discharge of a liquid of kinematic viscosity 4 cm²/sec through a 8 cm dia-meter pipe is 3200n cm7sec. The type of flow expected is

LAMINAR FLOW
NOT PREDICTABLE FROM THE GIVEN DATA
TRANSITION FLOW
TURBULENT FLOW

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Hydraulics & Fluid Mechanics
Mercury is often used in barometer because

both (B) and (C)
the height of barometer will be less
it is the best liquid
its vapour pressure is so low that it may be neglected

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Hydraulics & Fluid Mechanics
A large Roynold number is indication of

highly turbulent flow.
LAMINAR FLOW
turbulent flow
smooth and streamline flow

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