IF_A_TRANSFORMER_IS_PROVIDED_WITH_DIFFERENTIALLY_CONNECTED_RELAY._TO_P – McqOptions

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1.	IF_A_TRANSFORMER_IS_PROVIDED_WITH_DIFFERENTIALLY_CONNECTED_RELAY._TO_PREVENT_THE_MAL_OPERATION_OF_THE_RELAY,_THE_RELAY_RELAY_OPERATING_COIL_IS_BIASED_WITH_______?$
A.	3rd harmonic
B.	2nd harmonic
C.	7th harmonic
D.	5th harmonic
Answer» E.

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