Question

 What are cyclic and non cyclic processes? Calculate work done in such processes.

Answer 1

Cyclic processes:- In cyclic process, thermodynamic process start from the same state and end at the initial state.

Since, initial and final states are same,

 = Area enclosed by the curve

Sign of DW is '+' if process is clockwise and '–' if process in anti-clockwise. 

Non-cyclic process: If initial and final states are not same.

 = Area enclosed by P-V curve