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Hydraulics & Fluid Mechanics

Hydraulics & Fluid Mechanics
Ay between two stream lines represents

velocity
head
discharge
pressure

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Hydraulics & Fluid Mechanics
The distance from pipe boundary, at which the turbulent shear stress is one-third die wall shear stress, is (where R is the radius of pipe)

1/2 R
2/3 R
1/3 R
3/4 R

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Hydraulics & Fluid Mechanics
The Prartdtl mixing length is

zero at the pipe wall
independent of shear stress
None of these
maximum at the pipe wall

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Hydraulics & Fluid Mechanics
The horse power transmitted through a pipe is maximum when the ratio of loss of head due to friction and total head supplied is

1/4
2/3
1/2
1/3

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Hydraulics & Fluid Mechanics
The increase in meta centric height i) increases stability ii) decreases stability iii) increases comfort for passengers iv) decreases comfort for passengers The correct answer is

(ii) and (iv)
(i) and (iv)
(i) and (iii)
(ii) and (iii)

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Hydraulics & Fluid Mechanics
THE THEORETICAL VALUE OF COEFFICIENT OF CONTRACTION OF A SHARP EDGED ORIFICE IS

1.01
0.611
0.86
0.95

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