SSC JE Mechanical Engineering 2018 Set 5 Paper

Dual Cycle
Process 1→ 2 Isentropic compression
Process 2 → X Constant volume heat addition
Process X → 3 Constant pressure heat addition
Process 3 → 4 Isentropic expansion
Process 4 → 1 Constant volume heat rejection
Heat addition process carried at both constant pressure and constant volume