AC AND DC MEASURING INSTRUMENTS - Quiz

1) Which bearing is supporting the shaft of moving coil assembly in a PMMC instrument?

Steel bearings Bush bearings Jewelled bearings Gun metal bearings

2) What is the full form of the abbreviation PMMC meter?

Parallel Magnet Moving Coil meter Position Magnet Moving Coil meter Principle Magnet Moving Coil meter Permanent Magnet Moving Coil meter

3) Which type of wave is generated in Schmitt trigger circuit?

Sine wave Square wave Saw tooth wave Triangular wave

4) Which electrode controls brightness of the image on the screen of oscilloscope?

Anode Cathode Control grid Focussing electrode

5) Which band is used for UHF in International Telecommunication System?

Band 4 Band 6 Band 9 Band 11