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Hydraulics and Fluid Mechanics in ME

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

Critical flow
Tranquil flow
Torrential flow
Turbulent flow

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Hydraulics and Fluid Mechanics in ME
A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is

5
6
7
1

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Hydraulics and Fluid Mechanics in ME
A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

14π R3/2/15Cd × a √(2g)
14π R7/2/15Cd × a √(2g)
14π R5/2/15Cd × a √(2g)
14π R1/2/15Cd × a √(2g)

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Hydraulics and Fluid Mechanics in ME
If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will

float
tend to move downward and it may finally sink
rise until its weight equals the buoyant force
None of these

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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
2p/sinα
p/2sinα
2p/sin (α/2)

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Hydraulics and Fluid Mechanics in ME
Practical fluids

are compressible
possess all the above properties
are viscous
possess surface tension

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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