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For a nozzle, the vertical intercept between EGL and HGL

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+1 vote
in Fluid Mechanics by (118k points)
For a nozzle, the vertical intercept between EGL and HGL

(a) increases

(b) decreases

(c) remains constant

(d) may increase or decrease

The question was asked in my homework.

My question is taken from Hydraulic Gradient and Total Energy Line topic in portion Flow Through Pipes of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
The correct option is (a) increases

To explain I would say: The vertical intercept between EGL and HGL is equal to the kinetic head. For a nozzle, the cross-sectional area decreases in the direction of flow leading to an increase in the velocity of flow across the pipe. Since the kinetic head increases, the vertical intercept between EGL and HGL will increase.

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