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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a

Notch
Weir
Nozzle
Mouthpiece

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Hydraulics and Fluid Mechanics in ME
A flow is called hyper-sonic, if the Mach number is

Between 1 and 6
None of these
Unity
Less than unity

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Hydraulics and Fluid Mechanics in ME
The discharge of a double acting reciprocating pump is (where L = Length of stroke, A = Cross-sectional area of piston, and N = Speed of crank in r.p.m.)

2 L.A.N
(2 L.A.N)/60
(L.A.N)/60
L.A.N

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Hydraulics and Fluid Mechanics in ME
The pressure measured with the help of a Piezometer tube is in

N/m2
All of these
N/mm2
Head of liquid

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Hydraulics and Fluid Mechanics in ME
Theoretical power required (in watts) to drive a reciprocating pump is (where w = Specific weight of liquid to be pumped in N/m3, Q = Discharge of the pump in m3/s, Hs = Suction head in meters, and Hd = Delivery head in meters)

wQ (Hs + Hd)
wQ (Hs - Hd)
wQHd
wQHs

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Hydraulics and Fluid Mechanics in ME
The pressure at a point 4 m below the free surface of water is

19.24 kPa
29.24 kPa
39.24 kPa
49.24 kPa

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