The probable causes for fall in insulation resistance between phase terminal and earthed frame could be

  • ADirty insulation surface
  • BIngress of moisture
  • CSticking of carbon or copper particles to the internal surface
  • DAll of the above
Correct Answer : (D)

All of the above

Hints :

The most serious consequence of a major uncleared short-circuit fault could be


Which of the following results in a symmetrical fault?

Join The Discussion