The mean effective pressure (in kPa) of the cycle is

Question

In an air-standard Otto cycle, the compression ratio is 10. The condition at the beginning of the compression process is 100kPa and 27⁰C. Head added at constant volume is 1500 kJ/kg, while 700 kJ/kg of heat is rejected during the other constant volume process in the cycle. Specific gas constant for air = 0.287 kJ/kgK. The mean effective pressure (in kPa) of the cycle is                                                                          

      (a) 103                                                                (b) 310

      (c) 515                                                                (d) 1032