Refer to the drawing of a motor and its control circuit (see figure below).
Note: Relay contacts are shown open/closed according to the standard convention for control circuit drawings.
What is the purpose of the Time Delay Coil (TD) in the motor controller circuit?
A. Ensures the motor cannot be started until the overload relays are reset.
B. Ensures the motor cannot be started until the accelerating coil is energized.
C. Allows the motor to come up to speed before bypassing the starting resistors.
D. Allows the motor to come up to speed before placing the starting resistors in the circuit.
Show Answer
Answer: C
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