SSC JE Mechanical Engineering 2017 Set 2 Paper

Reversible cycle is a process whose direction can be "reversed" by inducing infinitesimal changes to some property of the system via its surroundings, with no increase in entropy.
Throughout the entire reversible process, the system is in thermodynamic equilibrium with its surroundings.
Carnot Ericsson & Stirling power cycles are Reversible cycle