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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
Multistage centrifugal pumps are used to

Give high discharge
Pump viscous fluids
Produce high heads
All of these

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Hydraulics and Fluid Mechanics in ME
The discharge over a triangular notch is

Directly proportional to H5/2
Directly proportional to H3/2
Inversely proportional to H3/2
Inversely proportional to H5/2

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Hydraulics and Fluid Mechanics in ME
The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)

4μvl/wd²
16μvl/wd²
8μvl/wd²
32μvl/wd²

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Hydraulics and Fluid Mechanics in ME
For pipes, laminar flow occurs when Roynolds number is

more than 4000
less than 4000
less than 2000
between 2000 and 4000

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Hydraulics and Fluid Mechanics in ME
The discharge in an open channel corresponding to critical depth is

Maximum
Minimum
Zero
None of these

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Hydraulics and Fluid Mechanics in ME
Indicator diagram of a reciprocating pump is a graph between

Pressure in cylinder vs. swept volume
Flow vs. swept volume
Pressure vs. speed
Flow vs. speed

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