railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Electronics and Drives Phase Controlled Rectifiers Three Phase Thyristor Converter Circuits
A 3 – phase semi-converter is feeding a separately excited dc motor at constant field current. The motor can operate in the following condition:
1
Speed positive, torque positive
2
Speed positive or negative, torque positive
3
Speed positive, torque positive or negative
4
Speed positive or negative, torque positive or negative