Refrigeration & Air Conditioning Mechanic Red Seal · Question
When checking compressor windings for continuity and resistance, what reading would indicate an open winding?
An open winding means there is a break in the electrical circuit. A multimeter set to resistance will show an 'O.L.' (Over Limit) or infinite resistance reading
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Question: When checking compressor windings for continuity and resistance, what reading would indicate an open winding?
Answer options:
- A very low resistance (near 0 ohms) ✅ An infinite resistance (O.L. or open loop)
- A resistance that fluctuates rapidly
- A negative resistance value
Correct answer: An infinite resistance (O.L. or open loop)
Explanation: An open winding means there is a break in the electrical circuit. A multimeter set to resistance will show an 'O.L.' (Over Limit) or infinite resistance reading, indicating no complete path for current flow.
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- Which of the following refrigerants is a hydrofluorocarbon (HFC) and has a high ozone depletion potential (ODP
- Which component is responsible for compressing the refrigerant vapour to a high pressure and temperature?
- According to the Canadian Electrical Code (CEC), what is the minimum required working clearance in front of el
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