Which of these conditions result in underexpanded nozzle?
A. Pe = Pa
B. Pe > Pa
C. Pe < Pa
D. Pe << Pa View Answer
Answer:B
Which of these conditions result in underexpanded nozzle?
A. Pe = Pa B. Pe > Pa C. Pe < Pa D. Pe << Pa View Answer
Explanation: In case of underexpanded nozzle, the exit pressure is greater than the ambient pressure Pe > Pa. This leads to formation of expansion wave at the tip of the nozzle and the flow is capable of more expansion.