In an a.c generator, the brushes are made of …….. .

In an AC generator, the brushes in contact with the step rings alternatively become positive and negative in the time interval of 5 ms. What is the frequency of the voltage generated ?

Tooth brush bristles are made up of

In an A.C. generator, when the plane of the armature is perpendicular to the magnetic field

In an A.C. generator, when the plane of the armature is perpendicular to the magnetic field

In one A.C. generator, brushes connected with slip rings become positive and negative alternatively at the regular interval of 10 ms. Then angular frequency of this A.C. voltage would be ……….

What is an a.c. generator? With the help of a labelled diagram, explain the construction and working of an a.c. generator.

An a.c generator is based on the phenomenon of……………………………

The necessary magnetic field for a low power a.c generator is produced by …….. .