Engine 2014: Electricity

1. A Ensures the motor cannot be started until the overload relays are reset.
2. B Ensures the motor cannot be started until the accelerating coil is energized.
3. C Allows the motor to come up to speed before placing the starting resistors in the circuit.
4. D Allows the motor to come up to speed at reduced voltage before bypassing the starting resistors.

Tip: press A-D to answer