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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The specific weight of sea water is __________ that of pure water.

Less than
Same as
More than
None of these

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Hydraulics and Fluid Mechanics in ME
The power transmitted through the pipe is maximum when the head lost due to friction is equal to

One-third of the total supply head
One-fourth of the total supply head
Two-third of the total supply head
One-half of the total supply head

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Hydraulics and Fluid Mechanics in ME
For a perfect incompressible liquid, flowing in a continuous stream, the total energy of a particle remains the same, while the particle moves from one point to another. This statement is called

Pascal’s law
Continuity equation
Archimedes’s principle
Bernoulli’s equation

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Hydraulics and Fluid Mechanics in ME
Rain drops are spherical because of

air resistance
atmospheric pressure
viscosity
surface tension forces

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Hydraulics and Fluid Mechanics in ME
The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)

K/ρ
None of the listed here
K.ρ
ρ/K

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Hydraulics and Fluid Mechanics in ME
The loss of head due to friction in a pipe of uniform diameter in which a viscous flow is taking place, is (where RN = Reynold number)

16/RN
64/RN
4/RN
1/RN

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