Certified Energy Manager Practice Exam

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What does TEFC stand for in motor types?

Totally Enclosed, Fan Controlled
Thoroughly Enhanced, Fan Cooled
Two Energy Flow Circuits
Tested Electric Frequency Control

The correct answer is: Totally Enclosed, Fan Controlled

The acronym TEFC stands for Totally Enclosed, Fan Cooled. This designation refers to a type of electric motor that features a totally enclosed construction, providing protection against dust, moisture, and other contaminants that could damage the internal components. The "fan cooled" aspect indicates that the motor utilizes an external fan to dissipate heat generated during operation, ensuring it remains within safe temperature limits. This design enhances the motor's reliability and longevity, making it suitable for a variety of industrial applications where environmental hazards might be present. Motors like these are commonly used in settings that require durability and efficient cooling, highlighting their importance in energy management practices.