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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at constant rate is called

Unsteady non-uniform flow
Steady non-uniform flow
Unsteady uniform flow
Steady uniform flow

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Hydraulics and Fluid Mechanics in ME
At the center line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be

Zero
Maximum
Could be any value
Minimum

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Hydraulics and Fluid Mechanics in ME
An error of 1% in measuring head over the apex of the notch (H) will produce an error of _________ in discharge over a triangular notch.

0.015
0.01
0.02
0.025

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Hydraulics and Fluid Mechanics in ME
The pitot tube is used to measure

dynamic pressure
velocity at stagnation point
stagnation pressure
static pressure

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Hydraulics and Fluid Mechanics in ME
The force exerted (in Newton) by a jet of water impinging normally on a fixed plate is (where w = Specific weight of water in N/m3, a = Cross-sectional area of jet in m², and V = Velocity of jet in m/s)

waV² / 2g
waV² / g
waV / 2g
waV / g

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Hydraulics and Fluid Mechanics in ME
According to Francis formula, the discharge over a rectangular weir is (where n = Number of end contractions)

(2/3) × Cd (L - 0.1nH) × √(2g) × H3/2
(2/3) × Cd (L - nH) × √(2g) × H²
(2/3) × Cd (L - nH) × √(2gh)
(2/3) × Cd (L - nH) × √(2g) × H5/2

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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