question_answer

During a cycle comprising four processes, the heat transfers during three processes are \[+\,\,45\,\,kJ,\] \[-\,\,30\,\,kJ,\] \[-\,\,25\,\,kJ.\] what should be the heat transfer during the fourth process so that the network done during the cycle is zero?

A) Zero                             

B) \[+\,\,10\,\,kJ\]

C) \[-\,\,10\,\,kJ\]                

D) \[-\,\,20\,\,kJ\]