Refrigeration & Air Conditioning Mechanic Red Seal · Question
When measuring the voltage across a normally operating single-phase compressor motor's run capacitor, what should be observed relative to the line voltage?
In a series circuit with the run winding, the capacitor voltage can be two to three times higher than the line voltage due to its capacitive reactance.
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Question: When measuring the voltage across a normally operating single-phase compressor motor's run capacitor, what should be observed relative to the line voltage?
Answer options: ✅ The voltage across the capacitor should be significantly higher than the line voltage.
- The voltage across the capacitor should be approximately equal to the line voltage.
- The voltage across the capacitor should be significantly lower than the line voltage.
- There should be no voltage across the capacitor during operation.
Correct answer: The voltage across the capacitor should be significantly higher than the line voltage.
Explanation: In a series circuit with the run winding, the capacitor voltage can be two to three times higher than the line voltage due to its capacitive reactance.
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