Which of the following statements about the flow in a converging-diverging nozzle is accurate?

Fluid Mechanics for Chemical MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Fluid Mechanics for Chemicalchemical-engineering › fluid-mechanics-for-chemical-chemical-engineering
Published
11 Mar 2019
Last updated
28 May 2026

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Choose the correct answer

Explanation

Option A is true because the Mach number reaches unity at the throat of the nozzle. Option B is correct since no shock waves occur within the nozzle when the exit Mach number is supersonic. Option C is incorrect because density typically decreases downstream in the converging part due to acceleration. Therefore, the correct choice is option B.

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