In the cycle shown in figure 1 mol of an ideal gas (? = 1.4) is initially

Question:

In the cycle shown in figure 1 mol of an ideal gas (? = 1.4) is initially at a pressure of 1atm and a temperature of 0^oC. The gas is heated at constant volume to t2 = 150^oC and is then expanded adiabatically until its pressure is again 1 atm. It is then compressed at constant pressure back to its original state. Find

(a) The temperature t3 after the adiabatic expansion,

(b) The heat entering or leaving the system during each process,

(d) The efficiency of a Carnot cycle operating between the temperature extremes of this cycle.