Question

The cycle in the figure followed by an engine made of an ideal gas in a cylinder with a piston, the heat exchanged by the engine with the surroundings for adiabatic section AB of the cycle is. $\left( \mathrm { C } _ { \mathrm { v } } = \frac { 3 } { 2 } \mathrm { R } \right)$

• A. $\frac { 3 } { 2 } \left( \mathrm { P } _ { \mathrm { B } } - \mathrm { P } _ { \mathrm { A } } \right) \mathrm { V } _ { \mathrm { A } }$
• B. $\frac { 5 } { 2 }$PA(VA – VB)
• C. $\frac { 1 } { 2 }$(PA – PB)(VA – VB)
• D. Zero

Answer 1

Answer: (D)

Zero

Answer 2

: Here from A To B the system is undergoing adiabatic process, hence heat exchange of system with surrounding do not take place, hence $Q _ { A B } = 0$