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For compressible fluid flow in a pipe, having decrease in specific gravity what will be the effect of decrease in diameter?

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+1 vote
in Fluid Mechanics by (118k points)
For compressible fluid flow in a pipe, having decrease in specific gravity what will be the effect of decrease in diameter?

(a) It will cause increase in velocity

(b) It will cause decrease in velocity

(c) It remains constant

(d) None of the mentioned

I had been asked this question in final exam.

Enquiry is from Continuity Equation in Two and Three Dimensions topic in chapter Kinematics of Flow and Ideal Flow of Fluid Mechanics

1 Answer

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Best answer
Correct answer is (a) It will cause increase in velocity

Easy explanation: According to continuity equation,

ρ*A*v = constant

Hence, as density and area decreases velocity is bound to increase.

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