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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m3
N/m
N/m2
N-m

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Hydraulics and Fluid Mechanics in ME
A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

4 (225)1/3 minutes
4 x V225 minutes
4 minutes
4 x (225)3/2 minutes

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Hydraulics and Fluid Mechanics in ME
Impulse turbine is generally fitted

Little above the tail race
Slightly below the tail race
About 2.5 m above the tail race to avoid cavitations
At the level of tail race

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Hydraulics and Fluid Mechanics in ME
Puck up the wrong statement about centrifugal pump

Head a diameter
Power a speed⁴
Head a speed²
Discharge a diameter

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Hydraulics and Fluid Mechanics in ME
The pressure of a liquid measured with the help of a Piezometer tube is

Gauge pressure
Vacuum pressure
Atmospheric pressure
Absolute pressure

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Hydraulics and Fluid Mechanics in ME
Specific weight of water in S.I. units is equal to

10000 N/m3
9.81 xlO3 N/m3
9.81 xlO6 N/m3
1000 N/m3

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