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
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D. Either A or B
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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
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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
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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
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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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