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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Water is a __________ fluid.

Newtonian
Ideal
Non-Newtonian
Real

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Hydraulics and Fluid Mechanics in ME
Total pressure on a lmxlm gate immersed vertically at a depth of 2 m below the free water surface will be

1000 kg
8000 kg
2000 kg
4000 kg

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Hydraulics and Fluid Mechanics in ME
Casting of a centrifugal pump is designed so as to minimize

Loss of kinetic energy
Static head
Friction loss
Cavitations

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Hydraulics and Fluid Mechanics in ME
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by

[(Vr + v) v]/ Vr
[2(Vr + v) v]/ Vr²
[2(Vr - v) v]/ Vr²
[(Vr - v) v]/ Vr

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Hydraulics and Fluid Mechanics in ME
Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

Directly proportional to N²
Inversely proportional to N²
Directly proportional to N
Inversely proportional to N

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Hydraulics and Fluid Mechanics in ME
If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge

Q/0.75
Same quantity of liquid
0.75 Q
1.5 Q

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