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Definition check: back pressure at nozzle exit Statement to judge: “The pressure at which the steam leaves the nozzle is known as the back pressure.” Choose whether the statement is correct or incorrect.

Difficulty: Easy

Agree (the statement is correct)
Disagree (the statement is incorrect)
True only for convergent–divergent nozzles
True only for impulse stages

Correct Answer: Agree (the statement is correct)

Explanation:

Concept/Approach

Back pressure is the pressure existing in the receiving space (e.g., condenser or next stage) into which the nozzle discharges; the nozzle exit pressure equals this back pressure in steady operation.

Final Answer
Agree — the exit pressure equals the back pressure.

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