The specific heat of air at constant volume is

Question

In an engine working on air standard Stirling cycle the temperature at the beginning of isothermal compression is 127°C. The engine thermal efficiency is 50%. The specific heat of air at constant volume is . The heat transferred to the regenerator is                               

(A) 200 C_V kJ / kg       (B) 300 C_V kJ / kg

(C) 400 C_V kJ / kg       (D) 500 C_V kJ / kg