The advantages of moving coil permanent magnet type instrument are

Question

RRB Paper · Accepted Answer

The advantages of a moving coil permanent magnet type instrument are:

Low power consumption: The moving coil permanent magnet type instrument requires a small amount of power to operate, making it suitable for use in low-power circuits.
No hysteresis loss: The permanent magnet used in the instrument does not exhibit hysteresis loss, which can be a source of error in some other types of instruments.
Efficiency eddy current damping: The instrument is designed to reduce the effect of eddy currents, which can cause error in some other types of instruments.

Low power consumption