FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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What is the principal advantage of the series wound dc motor?

  1. Energy efficiency

  2. High starting torque

  3. Low maintenance

  4. Quiet operation

The correct answer is: High starting torque

The principal advantage of the series wound DC motor is high starting torque. This type of motor design allows for a large amount of torque to be generated at low speeds, making it ideal for applications where a high starting torque is required, such as in aircraft propulsion systems. While energy efficiency, low maintenance, and quiet operation are all important factors in motor selection, the series wound DC motor is specifically known for its high starting torque capability.