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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be

First rise and then fall
Horizontal
Steep
Nearly horizontal

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Hydraulics and Fluid Mechanics in ME
A Pelton wheel develops 1750 kW under a head of 100 meters while running at 200 r.p.m. and discharging 2500 liters of water per second. The unit discharge of wheel is

1.5 m3/s
2.5 m3/s
0.5 m3/s
0.25 m3/s

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Hydraulics and Fluid Mechanics in ME
The divergent portion of a Venturimeter is made longer than convergent portion in order to

To minimize frictional losses
Avoid the tendency of breaking away the stream of liquid
Both (A) and (B)
None of these

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

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Hydraulics and Fluid Mechanics in ME
The force exerted by a moving fluid on an immersed body is directly proportional to the rate of change of momentum due to the presence of the body. This statement is called

Newton's law of motion
Newton's law of resistance
Newton's law of viscosity
Newton's law of cooling

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Hydraulics and Fluid Mechanics in ME
The stress-strain relation of the Newtonian fluid is

Hyperbolic
Inverse type
Linear
Parabolic

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