two currents
two voltages
two or more similar electrical quantities
none of the above
Answer is Right!
Answer is Wrong!
The correct answer is: A. two currents.
A differential relay is a type of protective relay that measures the vector difference between two or more electrical quantities, typically currents. It is used to protect electrical equipment
from faults caused by unbalanced currents.Option B is incorrect because a differential relay measures currents, not voltages.
Option C is incorrect because a differential relay measures two or more quantities, not just one.
Option D is incorrect because a differential relay is a type of protective relay.