The insulating material used between the commutator segments is normally

Related MCQs

• The commutator segments are connected to the armature conductors by means of
• In case of D.C. machine winding, number of commutator segments is equal to
• The material for commutator brushes is generally
• Which of the following insulating materials can withstand the highest temperature safely ?
• Sparking at the commutator of a D.C. motor may result in
• In a commutator
• In D.C. generators, the brushes on commutator remain in contact with conductors which
• The number of brushes in a commutator depends on
• To avoid formation of grooves in the commutator of a D.C. machine
• For both lap and wave windings, there are as many commutator bars as the numberof