Question: Air is compressed steadily and adiabatically from 17C and 90 kPa to 200C and 400 kPa. Assuming constant specific heats for air at room temperature,

Air is compressed steadily and adiabatically from 17°C and 90 kPa to 200°C and 400 kPa. Assuming constant specific heats for air at room temperature, the isentropic efficiency of the compressor is
(a) 0.76
(b) 0.94
(c) 0.86
(d) 0.84
(e) 1.00

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