Engine: Electricity

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

Tip: press A-D to answer