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Meaning of critical pressure (choked condition) in steam nozzles Statement: The critical pressure corresponds to steam velocity at the throat being equal to the local speed of sound (sonic condition). Decide whether the statement is correct.

Difficulty: Easy

True
False

Correct Answer: True

Explanation:

Concept
At the critical pressure ratio, the Mach number at the throat reaches 1 (sonic). The mass flow then attains its maximum for the given inlet state.

Therefore
The statement equating critical pressure to sonic throat velocity is correct.

Final Answer
True

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