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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced.

More than
Equal to
Less than
None of these

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Hydraulics and Fluid Mechanics in ME
The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is

μ π³ N² R⁴ /1800 t
μ π³ N² R² /1800 t
μ π³ N² R² /3600 t
μ π³ N² R⁴ /3600 t

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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

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

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Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the Newtonian fluid is

Inverse type
Hyperbolic
Parabolic
Linear

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Hydraulics and Fluid Mechanics in ME
When the Mach number is between ___ the flow is called super-sonic flow.

1 and 2.5
2.5 and 4
4 and 6
1 and 6

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Hydraulics and Fluid Mechanics in ME
The atmospheric pressure with rise in altitude decreases

first steeply and then gradually
first slowly and then steeply
linearly
unpredictable

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