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In induction type directional over current relay the driving torque is due to interaction of magnetic fields derived from

(A) current in the potential coil

(B) both voltage and current in the relay windings

(C) directional element and non-directional element

(D) non-directional element and the trip circuit

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In induction type directional over current relay the driving torque is due to interaction of magnetic fields derived from directional element and non-directional element

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