Reactance Relay Objective Type Questions and answers

41.  The structure used in reactance relay is

   A. Induction cup

   B. Double induction loop

   C. Single induction loop

   D. Either A or B

42.  Reactance relay is normally used for protection against

   A. Earth fault only

   B. Phase fault only

   C. Both earth and phase faults

   D. None of the above

43.  The operating characteristics of the reactance relay in the complex impedance plane is a

   A. Circle with its origin at the centre of the R-X plane

   B. Circle passing through the origin

   C. Straight line passing through the origin

   D. Straight line parallel to the X axis

44.  A reactance relay is

   A. Voltage restrained overcurrent relay

   B. Voltage restrained directional relay

   C. Directional restrained overcurrent relay

   D. Directional restrained over voltage relay

45.  Reactance relays are used for phase fault in.......line

   A. Short

   B. Medium

   C. Long

   D. All of the above

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