Engine 2014: Electricity

1. A DC is applied to the motor field at the instant of start-up and the resulting field current is used to accelerate the motor up to speed
2. B the motor is started at reduced voltage using primary reactors
3. C the motor is started as an induction motor using amortisseur windings in the rotor
4. D the motor is started at reduced voltage using primary resistors

Tip: press A-D to answer