Which motor is totally enclosed and equipped for exterior cooling by means of a fan integral with the motor but external to the enclosing parts?

• A. Totally Enclosed Fan-Cooled Motor
• B. Totally Enclosed Motor
• C. Open Motor
• D. Explosionproof Motor

Answer: (A)

The cooling arrangement described is a Totally Enclosed Fan-Cooled motor. This means the motor housing is sealed to keep out dust, moisture, and other contaminants, while a fan that is mounted on the motor (integral to the motor) sits outside the enclosing parts to provide external cooling air across the motor. This combination protects the motor from the environment while still removing heat effectively. The other options don’t match this exact setup: a totally enclosed motor without the external cooling fan lacks the described cooling method; an open motor has ventilation openings that expose the interior; an explosionproof motor refers to a different enclosure type intended for hazardous locations and does not specify the external fan cooling arrangement described here.