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Hydraulics and Fluid Mechanics in ME

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

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

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Hydraulics and Fluid Mechanics in ME
A turbine develops 10000 kW under a head of 25 meters at 135 r.p.m. Its specific speed is

275.4 r.p.m
175.4 r.p.m.
241.5 r.p.m.
215.5 r.p.m.

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Hydraulics and Fluid Mechanics in ME
For pipes, turbulent flow occurs when Reynolds number is

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

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Hydraulics and Fluid Mechanics in ME
The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow)

0.423 D
0.707 D
0.577 D
0.223 D

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Hydraulics and Fluid Mechanics in ME
The unit discharge through the turbine is

Q/√H
Q/H3/2
Q/H²
Q/H

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Hydraulics and Fluid Mechanics in ME
The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.

Less than
More than
None of these
Same as

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