In D.C. generators, the cause of rapid brush wear may be

Related MCQs

• Two generators are running in parallel. One of the generators may run as motor for which of the following reasons ?
• The rapid wear of brushes takes place due to
• The voltage drop for which of the following types of brush can be expected to be least?
• Following energized winding of a D.C. machine should not be opened as it would produce high inductive voltage which may be dangerous to personnel and may cause its own insulation failure.
• D.C. generators are normally designed for maximum efficiency around
• D.C. generators are installed near the load centres to reduce
• In D.C. generators the pole shoes are fastened to the pole core by
• In D.C. generators, current to the external circuit from armature is given through
• In D.C. generators, the brushes on commutator remain in contact with conductors which
• D.C. generators are connected to the busbars or disconnected from them only under the floating condition