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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
When a body floating in a liquid, is displaced slightly, it oscillates about

center of pressure
e.g. of body
center of buoyancy
metacentre

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Hydraulics & Fluid Mechanics
Least possible value of correction factor for i) kinetic energy is zero ii) kinetic energy is 1 iii) momentum is zero iv) momentum is 1 The correct statements are

(i) and (iv)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)

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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
TURBULENT FLOW
NOT PREDICTABLE FROM THE GIVEN DATA
TRANSITION FLOW

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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
Specific weight of sea water is more that of pure water because it contains

dissolved salt
dissolved air
suspended matter
All of these

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Hydraulics & Fluid Mechanics
Surface energy per unit area of a surface is numerically equal to

force of adhesion
atmospheric pressure
surface tension
force of cohesion

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