The actuating quantity for the relays can be
AMagnitude
BPhase angle
CFrequency
DAny of the above
AMagnitude
BPhase angle
CFrequency
DAny of the above
Related Questions:
Which of the following situations is/are possible?
(a) Magnetic field lines can be parallel to each other.
(b) Magnetic field lines can be concentric circles.
(c) Magnetic field lines can intersect each other.