A cycle followed by an engine (made of one mole of an ideal gas in a cylinder with a piston) is shown in Fig. Find heat exchanged by the engine, with the surrounding for each section of the cycle. AB : Constant volumeBC: constant pressureCD : adiabaticDA: constant pressure.

A cycle followed by an engine (made of one mole of an ideal gas in a c

1.	A cycle followed by an engine (made of one mole of an ideal gas in a cylinder with a piston) is shown in Fig. Find heat exchanged by the engine, with the surrounding for each section of the cycle. AB : Constant volumeBC: constant pressureCD : adiabaticDA: constant pressure.
Answer» <P> Solution :`Q_(AB)=U_(AB)=3/2R(T_(B)-T_(A))=3/2 V_(A)(P_(B)_P_(A))` `Q_(BC)=U_(BC)+W_(BC)=(3//2)P_(B)(V_(C)-V_(B))+P_(B)(V_(C)-V_(B))=(5//2)P_(B)(V_(C)-V_(A))` `Q_(CD)=0 Q_(DA)=(5//2)P_(A)(V_(A)-V_(D))`