1.

What is the main cause for the failure of overhead line insulators?(a) Surges(b) Flashover(c) Arching(d) GroundingThe question was asked in class test.Enquiry is from Insulating Materials topic in chapter Electrical Engineering Materials of Design of Electrical Machines

Answer»

Correct choice is (B) Flashover

To explain I would say: In OVERHEAD lines, there OCCURS a flow of ABNORMAL over voltages. This abnormal over voltages, causes flashover. This flashover causes damage to overhead line insulators.



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