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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

14.1 sec
5.2 sec
4.1 sec
10.4 sec

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Hydraulics and Fluid Mechanics in ME
A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is

215.5 r.p.m.
241.5 r.p.m.
275.4 r.p.m
175.4 r.p.m.

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Hydraulics and Fluid Mechanics in ME
The bulk modulus of elasticity

is independent of pressure and viscosity
has the dimensions of 1/pressure
is large when fluid is more compressible
increases with pressure

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Hydraulics and Fluid Mechanics in ME
Saving of work done and power by fitting an air vessel to single acting reciprocating pump is of the order of

49.2%
84.8%
68.8%
39.2%

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Hydraulics and Fluid Mechanics in ME
An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more than three times the diameter of the orifice.

Free
None of these
Partially
Full

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Hydraulics and Fluid Mechanics in ME
When a cylindrical vessel of radius (r) containing liquid is revolved about its vertical axis ω rad/s, then depth of parabola which the liquid assumes is

ω².r²/2g
ω.r/2g
ω².r²/4g
ω.r/4g

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