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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow in which the volume of a fluid and its density does not change during the flow is called _________ flow.

Compressible
None of these
Viscous
Incompressible

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Hydraulics and Fluid Mechanics in ME
The discharge over a right angled notch is (where H = Height of liquid above the apex of notch)

(8/15) Cd. 2g. H5/2
(8/15) Cd. 2g. H3/2
(8/15) Cd. 2g. H
(8/15) Cd. 2g. H²

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Hydraulics and Fluid Mechanics in ME
By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is

0.392
0.488
0.884
0.848

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Hydraulics and Fluid Mechanics in ME
The specific weight of water in S.I. units is taken as

9.81 × 10-6 N/mm3
9.81 × 103 N/m3
9.81 kN/m3
Any one of these

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Hydraulics and Fluid Mechanics in ME
The velocity of jet of water traveling out of opening in a tank filled with water is proportional to

h/2
V/T
Head of water (h)
h²

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Hydraulics and Fluid Mechanics in ME
The discharge through a convergent mouthpiece is __________ the discharge through an internal mouthpiece of the same diameter and head of water.

One-half
Equal to
Double
Three fourth

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