What happens to the coil in a PMMC meter when no current flows through it?
What happens to the coil in a PMMC meter when no current flows through it?
Right Answer is:
It remains stationary at the zero position
SOLUTION
- When no current flows through the coil in a PMMC meter, the coil remains stationary at the zero position.
- The hairsprings attached to the coil provide a restoring torque that returns the coil to its initial position when there is no current.
- These springs resist the movement of the coil and ensure it goes back to the zero mark when the current