In a compression ignition engine, the inlet air pressure is 1 bar and the pressure at the end of isentropic compression is 32.42 bar. The expansion ratio is 8. Assuming ratio of specific heats ( ) as 1.4, the air standard efficiency (in percent) is

In a compression ignition engine, the inlet air pressure is 1 bar and

1.	In a compression ignition engine, the inlet air pressure is 1 bar and the pressure at the end of isentropic compression is 32.42 bar. The expansion ratio is 8. Assuming ratio of specific heats ( ) as 1.4, the air standard efficiency (in percent) is
A.	59.59%
B.	59.699%
C.	59.599%
D.	59.99%
Answer» D. 59.99%

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In a compression ignition engine, the inlet air pressure is 1 bar and the pressure at the end of isentropic compression is 32.42 bar. The expansion ratio is 8. Assuming ratio of specific heats ( ) as 1.4, the air standard efficiency (in percent) is

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