If exhaust pressure is Pe and surrounding fluid pressure is Pa, what i – McqOptions

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1.	If exhaust pressure is Pe and surrounding fluid pressure is Pa, what is the condition for the optimum expansion ratio of a rocket nozzle?
A.	P<sub>e</sub>=P<sub>a</sub>
B.	P<sub>e</sub><P<sub>a</sub>
C.	P<sub>e</sub>>P<sub>a</sub>
D.	P<sub>e</sub>=0.5*P<sub>a</sub>
Answer» B. P<sub>e</sub><P<sub>a</sub>

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