engineering recuitment HPCL Junior Executive 2025 Mock Test Power Electronics and Drives Phase Controlled Rectifiers Three Phase Thyristor Converter Circuits
In a 3-phase semi-converter, firing angle = 120° and extinction angle = 110°. Each SCR and free-wheeling diode conducts respectively for
1
60°, 10°
2
30°, 40°
3
30°, 50°
4
60°, 50°