Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which of the following describes the function of a start capacitor in a single-phase motor?
A start capacitor creates a phase shift in the current flowing through the auxiliary (start) winding, establishing a rotating magnetic field necessary to apply
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Question: Which of the following describes the function of a start capacitor in a single-phase motor?
Answer options:
- To improve the power factor during continuous operation. ✅ To provide a leading current to the auxiliary winding for starting torque.
- To filter electrical noise from the motor windings.
- To store energy for the motor to use during shutdown.
Correct answer: To provide a leading current to the auxiliary winding for starting torque.
Explanation: A start capacitor creates a phase shift in the current flowing through the auxiliary (start) winding, establishing a rotating magnetic field necessary to apply starting torque to the rotor and initiate motor rotation.
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