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. AC generator has split rings while DC generator has slip rings.
• C. AC generator will generate a higher voltage.
• D. AC generator has slip rings while DC generator has split rings.

Answer 1

The correct option is D

AC generator has slip rings while DC generator has split rings.

An AC generator contains a slip ring commutator. Hence, the direction of the induced current changes after each half cycle of the coil rotation. On the other hand, a split-ring type commutator is used in DC generators. This commutator maintains a unidirectional current flow, making the generator a DC generator.