Moving Iron Power Factor Meters
There are two varieties of moving iron type power factor meter. These are rotating field type and alternating field type. Rotating Field Type Power Factor Meter Construction In this type of moving iron power factor …
Measuring Instruments
Electrical Resonance Type Frequency Meter
The electrical resonance type frequency meter is an indicating type instrument. As the name suggests its action depends upon the electrical resonance. Construction of Electrical Resonance Type Frequency Meter It mainly consists of a fixed …
Three Phase Dynamometer Type Power Factor Meter
The three phase dynamometer type power factor meter is a kind of dynamometer type instruments. As the name indicates, we use these power factor meter for measuring power factor in a three-phase circuit. Although there …
Thermocouple Instrument Working and Construction
In the thermocouple instrument, we join two wires of two different materials together. Hence, there will be two junctions. If the temperature of these two junctions is different, there will be a current circulating through …
Single Phase Dynamometer Type Power Factor Meter
This is a dynamometer type instrument. Construction The single phase dynamometer type power factor meter consists of one current coil and two voltage coils. Here, in the construction of this power factor meter, we divide …
Electrostatic Wattmeter Construction And Working
We use electrostatic wattmeter for measuring the small quantity of power. Particularly it is useful when the voltage is high and the power factor is low. We use electrostatic wattmeter mainly for measuring of dielectric …
D’Arsonval Galvanometer Construction Working
Construction of D’Arsonval Galvanometer D’Arsonval Galvanometer consists of two main parts A permanent magnet A light coil Here we use a very lightweight rectangular or circular aluminum frame. Then, on that aluminum frame, we wrap …
Galvanometer Types Applications of Galvanometer
The galvanometer is an indicating instrument. This instrument mainly detects the presence of any small electric signal in a circuit. Although this instrument can measure currents and voltages. But we normally use this instrument to …
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 …
Induction Type Wattmeter Construction Working and Torque
Induction type wattmeter or simply induction wattmeter belongs to the family of induction type measuring instrument. Since the induction phenomenon can only happen in the alternating current system, this instrument only measures AC power. For …
Read moreInduction Type Wattmeter Construction Working and Torque