Multistage compression is necessary for high efficiency,

Question: Multistage compression is necessary for high efficiency,
[A].

if the ratio of the delivery pressure to the intake pressure exceeds 5:1.

[B].

when large amount of gas is to be compressed.

[C].

when the delivered gas is desired at very high velocity.

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.