Refrigeration & Air Conditioning Mechanic Red Seal · Question
A contractor measures the capacitance of a run capacitor and finds it to be significantly below the specified microfarad (µF) rating. What effect will this likely have on the motor's operation?
A run capacitor that is below its specified µF rating will lead to reduced starting torque, potentially causing hard starting or failure to start. It can also i
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
Question: A contractor measures the capacitance of a run capacitor and finds it to be significantly below the specified microfarad (µF) rating. What effect will this likely have on the motor's operation?
Answer options:
- Increased starting torque and reduced run current ✅ Reduced starting torque and increased run current
- No significant effect on motor performance
- Overheating of the motor's main winding only
Correct answer: Reduced starting torque and increased run current
Explanation: A run capacitor that is below its specified µF rating will lead to reduced starting torque, potentially causing hard starting or failure to start. It can also increase the motor's run current as the phase shift created by the capacitor is insufficient for optimal operation.
Start free practice for Refrigeration & Air Conditioning Mechanic Red Seal
500 questions · no signup required · 40 free questions per day
More about Refrigeration & Air Conditioning Mechanic Red Seal
Related Questions
- 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
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
- Which type of electric motor requires a capacitor for starting and running, offering higher efficiency and bet
- When evacuating a refrigeration system, what is the recommended deep vacuum level, typically measured in micro
More for Refrigeration & Air Conditioning Mechanic Red Seal candidates
FAQs
Question explanations
- 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
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Refrigeration & Air Conditioning Mechanic Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.