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HYDRAULICS & FLUID MECHANICS

Hydraulics & Fluid Mechanics
A perfect gas

is incompressible
has constant viscosity
None of these
is of theoretical interest

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Hydraulics & Fluid Mechanics
According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to

more than the weight of the body
the weight of the body
less than the weight of the body
weight of the fluid displaced by the body

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Hydraulics & Fluid Mechanics
The difference of pressure between the inside and outside of a liquid drop is

(a)p = Txr
(b)p = T/r
p = T/2r
(d)p = 2T/r

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Hydraulics & Fluid Mechanics
An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is

9.81 m/sec²
10m/sec²
10.2/m sec
9.75 m/sec²

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

boundary layer
drag
wake
lift

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