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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is

3.0 m
2.5 m
4.0 m
2.4 m

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

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

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Hydraulics and Fluid Mechanics in ME
The discharge through a reaction turbine with increase in unit speed

First increases and then decreases
Decreases
Increases
Remain unaffected

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

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Hydraulics and Fluid Mechanics in ME
If the depth of water in an open channel is greater than the critical depth, the flow is called

Torrential flow
Tranquil flow
Turbulent flow
Critical flow

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Hydraulics and Fluid Mechanics in ME
Head developed by a centrifugal pump depends on

Both (A) and (B) above
Speed
Impeller diameter
Fluid density

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