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DC motors are constructed using:(a) Permanent Magnet(b) Electromagnet.(c) Magnets are not used(d) PlasticsThis question was addressed to me by my school teacher while I was bunking the class.This key question is from Controller Components topic in portion Control System and Components of Control Systems

Answer»

Correct answer is (a) Permanent Magnet

To elaborate: DC motors are are the motors that work o the DIRECT current and COMMUTATORS are replaced by slip RINGS and now constructed USING permanent magnets having high flux density.



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