engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Electrical and Electronics Measurements Indicating Instruments MI Instruments
The frequency range of moving-iron instruments is:
1
low-frequency band 30 Hz to 300 kHz
2
audio-frequency band 20 Hz to 20 kHz
3
power frequencies 0 to 125 Hz
4
very low-frequency band 10 Hz to 30 kHz