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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The meatcentric height of a ship is 0.6 m and the radius of gyration is 4 m. The time of rolling of a ship is

10.4 sec
5.2 sec
14.1 sec
4.1 sec

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Hydraulics and Fluid Mechanics in ME
The critical depth meter is used to measure

Depth of flow in an open channel
Velocity of flow in an open channel
Hydraulic jump
Depth of channel

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Hydraulics and Fluid Mechanics in ME
Choose the wrong statement. Alcohol is used in manometer, because

Its density is less
It provides suitable meniscus for the inclined tube
Its vapour pressure is low
It provides longer length for a given pressure difference

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Reynolds number is

More than 4000
Less than 4000
Less than 2000
Between 2000 and 4000

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Hydraulics and Fluid Mechanics in ME
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred

Mixed flow
Reciprocating
Axial flow
Centrifugal

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Hydraulics and Fluid Mechanics in ME
A metal with specific gravity of 'a' floating in a fluid of same specific gravity 'a' will

Float over fluid
Be fully immersed with top surface at fluid surface
Sink to bottom
Partly immersed

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