The various types of torques that are essential for the satisfactory operation of an analog indicating instrument are as follows, Deflecting torque, Controlling torque, and Damping torque Now let us see about deflecting torque in…
In the last article, we have seen about electrostatic instruments. An electrostatic instrument is basically a voltmeter that works on the principle of static electric field. They are used for voltage measurement (especially for h…
Basically, electrostatic instruments are used only as voltmeters which can measure the voltages both in ac and dc circuits. The extension of range of electrostatic voltmeters can be done using, Resistance potential divider Capaci…
Generally, electrostatic instruments are used as voltmeters only. These instruments work on the principle of static electric field i.e., the electric field produced by stationary charge. Electrostatic instruments have capable of …
An attracted disc type electrostatic instrument is basically known as a portable electrostatic instrument. This device contains two semicircular plates one being stationary and the other rotating. Both the plates are electrically…
In the last article, we have seen about range extension of ammeters. The range of ammeters can be extended by using a shunt or current transformer. Now let us learn about the extension of the measuring range of voltmeters. Due t…
There are different types of ammeters used in measuring system to measure current. They are, Moving Iron Type - Used for measuring both direct and alternating currents Permanent Magnet Moving Coil (PMMC) Type - Used for dc measur…
