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Hydraulics and Fluid Mechanics in ME

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

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Hydraulics and Fluid Mechanics in ME
The atmospheric pressure at sea level is

10.3 m of water
760 mm of mercury
All of these
103 kN/m2

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Hydraulics and Fluid Mechanics in ME
The increase in pressure at the outer edge of a drum of radius (r) completely filled up with liquid of density (ρ) and rotating at (ω) rad/s is

2ρ ω2 r2
ρ ω2 r2/2
ρ ω2 r2/4
ρ ω2 r2

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Hydraulics and Fluid Mechanics in ME
A pressure of 25 m of head of water is equal to

25 kN/m2
2500 kN/m2
245 kN/m2
2.5 kN/m2

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Hydraulics and Fluid Mechanics in ME
A vessel of 4 m3 contains oil which weighs 30 kN. The specific weight of the oil is

4.5 kN/m3
6 kN/m3
7.5 kN/m3
10 kN/m3

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Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

very low pressure
difference of pressure between two points
pressure in pipes, channels etc
atmospheric pressure

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