Explaon the following processes
Cyclic process with example

Explanation

Cyclic process : A process in which the system after passing through various stages such as change in pressure , volume and temperature etc. returns to its initial state is defined as "cyclic process" .
For a thermodynamic system the internal energy of the system depends on thermodynamic variables such as pressure , valume temperature etc , In cyclic process the system finally returns to the initial state and it is in thermal equilibrium with surroundings . So change in internal energy of the system dU = 0 .
Hence , in a cyclic process work done is equal to energy absorbed in the cyclic process .
So for cyclic prcess dU = 0 and dQ = dW .
Example : Generally all heat engines (or) refrigerators are operated in cyclic process .