An ideal spark ignition engine has a compression ratio of 9. What is its Air standard efficiency if ratio of specific heats is 1.5?

An ideal spark ignition engine has a compression ratio of 9. What is i

1.	An ideal spark ignition engine has a compression ratio of 9. What is its Air standard efficiency if ratio of specific heats is 1.5?
A.	63%
B.	67%
C.	70%
D.	72%
Answer» C. 70%

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An ideal spark ignition engine has a compression ratio of 9. What is its Air standard efficiency if ratio of specific heats is 1.5?

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