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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

2.4 m
4.0 m
3.0 m
2.5 m

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Hydraulics and Fluid Mechanics in ME
Gauge pressure at a point is equal to the absolute pressure ___ the atmospheric pressure.

Minus
Divide
Multiply
Plus

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Hydraulics and Fluid Mechanics in ME
The ratio of specific weight of a liquid to the specific weight of pure water at a standard temperature is called

Density of liquid
Compressibility of liquid
Surface tension of liquid
Specific gravity of liquid

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Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

waV / g
waV / 2g
waV² / 2g
waV² / g

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Hydraulics and Fluid Mechanics in ME
The continuity equation is connected with

Steady/unsteady flow
Conservation of mass
Compressibility of fluids
Open channel/pipe flow

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Hydraulics and Fluid Mechanics in ME
In a reciprocating pump, air vessels are used to

Increase delivery head
Reduce acceleration head
Smoothen the flow
Reduce suction head

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