AC DC MOTOR DRIVES - Practice Mode

Back e.m.f Field current Terminal voltage Armature current

Correct Answer: Armature current

Inverter switching device D.C bus switching device Rectifier switching device Field supply switching device

Correct Answer: Inverter switching device

Converts A.C to D.C Converts A.C to A.C Converts D.C to A.C Converts D.C to D.C

Correct Answer: Converts A.C to A.C

Easy to operate Robust in construction Very high starting torque Maintenance free long life

Correct Answer: Maintenance free long life

By reducing the field current By increasing the field current By increasing the supply voltage By reducing the armature voltage

Correct Answer: By reducing the field current