Which of the following statement (s) is/are relevant to critical flow through a steam nozzle? 1. Flow rate through the nozzle is minimum. 2. Flow rate through the nozzle is maximum. 3. Velocity at the throat is supersonic. 4. Velocity at the throat is sonic. Select the correct answer using the codes given below: Codes:

Which of the following statement (s) is/are relevant to critical flow

1.	Which of the following statement (s) is/are relevant to critical flow through a steam nozzle? 1. Flow rate through the nozzle is minimum. 2. Flow rate through the nozzle is maximum. 3. Velocity at the throat is supersonic. 4. Velocity at the throat is sonic. Select the correct answer using the codes given below: Codes:
A.	1 alone
B.	1 and 3
C.	2 and 4
D.	4 alone
Answer» D. 4 alone

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