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Which motor is NOT suitable for use as a DC machine?

67. Which motor is NOT suitable for use as a DC machine?

1. Squirrel cage motor
2. Synchronous motor
3. Permanent magnet motor
4. Series motor

Answer

The correct answer is: A) Squirrel cage motor

Explanation

The squirrel cage motor is NOT suitable for use as a DC machine. Because the squirrel cage motor does not have any connection to the armature. The squirrel cage motors are a subclass of induction motors, which harness electromagnetism to generate motion.