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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
The surface tension of mercury at normal temperature compared to that of water is

less
more or less depending on size of glass tube
same
more

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Hydraulics & Fluid Mechanics
If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its

specific mass
specific weight
specific gravity
specific density

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Hydraulics & Fluid Mechanics
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is

1/3
1/2
2/3
1/4

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

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

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Hydraulics & Fluid Mechanics
A perfect gas

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

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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

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

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