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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

metacentre
center of buoyancy
center of gravity
center of pressure

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Hydraulics and Fluid Mechanics in ME
In a centrifugal pump, the liquid enters the pump

At the canter
At the top
From sides
At the bottom

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Hydraulics and Fluid Mechanics in ME
The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a triangular notch is given by

dQ/Q = 3 × (dH/H)
dQ/Q = 5/2 × (dH/H)
dQ/Q = 3/2 × (dH/H)
dQ/Q = 2 × (dH/H)

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Hydraulics and Fluid Mechanics in ME
Pitot tube is used for measurement of

dsscharge
pressure
flow
velocity

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Hydraulics and Fluid Mechanics in ME
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)

Q = Cd × a × 2gh
Q = (3Cd × a)/√(2h)
Q = (Cd × a)/√(2gh)
Q = (2/3). Cd × a × h

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

Divide
Multiply
Minus
Plus

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