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Isentropic nozzle flow states about the movement of a gas or fluid through a narrow orifice without an increase or decrease in ___________

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in Fluid Mechanics by (118k points)
Isentropic nozzle flow states about the movement of a gas or fluid through a narrow orifice without an increase or decrease in ___________

(a) Pressure

(b) Energy

(c) Displacement

(d) Entropy

I got this question during a job interview.

My question is based upon Flow through Nozzles topic in section Flow Through Pipes of Fluid Mechanics

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Best answer
Right choice is (d) Entropy

Explanation: Entropy is defined as the measure of degree of randomness. It is a thermodynamics quantity. As this nozzle flow deals with thermodynamics, entropy is the right choice. The other options are not parameters of entropy.

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