Refrigeration & Air Conditioning Mechanic Red Seal · Question
Which type of electrical motor is commonly used for small, inexpensive fans and blowers due to its simple construction but low starting torque?
Shaded-pole motors are simple, inexpensive, and robust but have low starting torque, making them suitable for small, direct-drive fans.
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Question: Which type of electrical motor is commonly used for small, inexpensive fans and blowers due to its simple construction but low starting torque?
Answer options: ✅ Shaded-pole motor
- Permanent Split Capacitor (PSC) motor
- Capacitor-start motor
- Three-phase induction motor
Correct answer: Shaded-pole motor
Explanation: Shaded-pole motors are simple, inexpensive, and robust but have low starting torque, making them suitable for small, direct-drive fans.
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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
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