Induction Type Watt Hour Meter

Induction Type Watt Hour Meter or Energy Meter

The electromechanical type energy meter, what we use in our domestic and industrial installation is single phase induction type watt hour meter. Although nowadays, the Electric Supply Companies, are replacing the conventional electromechanical type meters … Read more

repulsion type moving iron instrument

Repulsion Type Moving Iron Instrument

Construction Working Principle Deflecting Torque Construction of Repulsion Type Moving Iron Instrument One variation of moving iron instrument is repulsion type instrument. Here we keep the shaft of the moving system along the axis of … Read more

Deflecting Torque of Attraction Type Moving Iron Instrument

Attraction Type Moving Iron Instrument

Construction of Attraction Type Moving Iron Instrument There are two types of moving iron instrument. One is the attraction type moving iron instrument. Another is repulsion type moving iron instrument. We will discuss in this … Read more

Electrostatic Type Measuring Instrument

The working principle of the electrostatic type measuring instrument is quite simple. It depends on the attraction between two oppositely electrically charged plates. You know that as per Coulomb’s law there is always an attraction … Read more

shaded pole

Shaded Pole Type Induction Instrument

Before going through the actual working principle of shaded pole type induction instrument we will examine what happens when we place one aluminum disc in between the poles of an electromagnet. The current through the … Read more