Power factor meter
Power Factor Meter | Dynamometer Type

Power Factor Meter The instrument which is used for the measurement of power factor is called as power factor meter. The power factor may be defined as Cosine of the…

frequency meter
Electrical Resonance type Frequency Meter

Frequency Meter These are used to measure supply frequency. These are used at generating stations & substations. A frequency meter is an instrument that displays the frequency of a periodic electrical…