Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which type of thermistor typically decreases in resistance as its temperature increases?
NTC thermistors are commonly used in HVAC/R for temperature sensing because their resistance inversely correlates with temperature.
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Question: Which type of thermistor typically decreases in resistance as its temperature increases?
Answer options: ✅ NTC (Negative Temperature Coefficient) thermistor.
- PTC (Positive Temperature Coefficient) thermistor.
- Fixed resistor.
- Varistor.
Correct answer: NTC (Negative Temperature Coefficient) thermistor.
Explanation: NTC thermistors are commonly used in HVAC/R for temperature sensing because their resistance inversely correlates with temperature.
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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
- What is the main operating characteristic difference between a fixed orifice (capillary tube) and a Thermostat
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