Thermodynamics

Air is adiabatically compressed in a steady flow system from 1 bar to 5 bars.  The air enters at 298 K and the compressor efficiency is 70 %.  The work per unit mass of air required for the compression (in kJ/kg) most nearly is

 122

174

 

249

 

1703

 

 

HINT

 

This question of the day was provided by the courtesy of  Professor Scott Campbell of the University of South Florida from the book FE Practice Exam With Complete Solutions