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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
A differential manometer is used to measure

Atmospheric pressure
Difference of pressures between two points in a pipe
Pressure in Venturimeter
Pressure in pipes and channels

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Hydraulics and Fluid Mechanics in ME
Reaction turbines are used for

Low head and high discharge
Low head
High head and low discharge
High head

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Hydraulics and Fluid Mechanics in ME
A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is

40 × 10⁵ kg/cm²
4000 kg/cm²
400 kg/cm²
40 × 10⁶ kg/cm²

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Hydraulics and Fluid Mechanics in ME
When a tank containing liquid moves with an acceleration in the horizontal direction, then the free surface of the liquid

Falls on the front end
Remains horizontal
Becomes curved
Falls on the back end

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Hydraulics and Fluid Mechanics in ME
The unit of kinematic viscosity in S. I. units is

N-m/s
N-s/m2
N-m
m2/s

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