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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.

None of these
Unstable
Stable
Neutral

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Hydraulics and Fluid Mechanics in ME
In an immersed body, centre of pressure is

Could be above or below e.g. depending on density of body and liquid
Below be centre of gravity
Above the centre of gravity
At the centre of gravity

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Hydraulics and Fluid Mechanics in ME
Medium specific speed of a pump implies it is

Any one of the above
Axial flow pump
Centrifugal pump
Mixed flow pump

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Hydraulics and Fluid Mechanics in ME
In a lock-gate, the reaction between two gates is (where P = Resultant pressure on the lock gate, and α = Inclination of the gate with the normal to the side of the lock)

p/sinα
p/2sinα
2p/sin (α/2)
2p/sinα

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

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

1.5 m3/s
2.5 m3/s
0.25 m3/s
0.5 m3/s

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