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 commutator

Answer 1

The correct option is D AC generator has slip rings while the DC generator has commutator

AC generator has slip rings.A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. A slip ring can be used in any electromechanical system that requires rotation while transmitting power or signals.

DC generator has commutator.The commutation in DC machine or more specifically commutation in DC generator is the process in which generated alternating current in the armature winding of a dc machine is converted into direct current after going through the commutator and the stationary brushes.