Chapter 4: Magnetic Effects of Electric Current

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Q
Magnetic Effects of Electric Current

Question:

The essential difference between an AC generator and a DC generator is that

(a) AC generator has an electromagnet while a DC generator has permanent magnet.

(b) DC generator will generate a higher voltage.

(c) AC generator will generate a higher voltage.

(d) AC generator has slip rings while the DC generator has a commutator.

Answer:

The correct option is (d).

AC generator has two rings called slip rings whereas a DC generator has two half rings called split rings (commutator).


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