Potentiometer: Construction and Working
Potentiometer..when you hear the word ..what comes in your mind ..yes .. potential and meter ..means the meter that measures potential ..yes it is used to measure the potential as…
Induction Wattmeter
Induction Wattmeter is used to measure power in AC Circuits. We all know Power = VI Cos(Theta) where V is the voltage , I is the Current and Theta is…
Electrodynamic or Dynamometer Instruments
This instrument is similar to PMMC(Permanent Magnet Moving Coil) Instruments except in place of permannet magnets , there is a coil . Construction: There is a coil which is divided…
Permanent Magnet Moving Coil (PMMC) Instruments
Construction & Working : simply in brief , there is a coil which is free to move and is surrounded by powerfull magnets. Now we dicuss in detail .. There…
Moving Iron instruments
As the name suggests , there is iron piece in these instruments ..the movement of this iron piece gives the necessary reading. These instruments are of two types i.e. attraction…