The differences between Current Transformer (CT) and Potential Transformer (PT) are given below: S.No. Current Transformer (CT) Potential Transformer (PT) 1. It…
Measurement of Medium Resistance
Resistance is classified into three categories as low, medium and high resistance. Medium Resistance ranges from 1Ω to 0.1 MΩ. The different methods…
Measurement of Low, Medium & High Resistance
Resistance is classified into three categories for the sake of Measurement. Different categories of Resistance are measured by the different…
Permanent Magnet Moving Coil or PMMC Instruments
PMMC stands for Permanent Magnet Moving Coil. PMMC Instruments are the most accurate type for the measurement of DC current…
Single Phase Electrodynamometer Power Factor Meter
Construction The construction of a single phase Electrodynamometer Power Factor Meter is shown in fig. 1. It consists of a fixed…
Digital Frequency Meter | Block Diagram & Working
Functional Block diagram of Digital Frequency Meter Working principle of Digital frequency meter 1. The unknown frequency signal is fed to…
PMMC & Dynamometer Instruments Construction Difference
Difference between the construction of PMMC and dynamometer instruments PMMC (Permanent moving magnet coil) Instrument (1) Moving Coil: The moving…
Phototransistor | Symbol, Operation and Applications
The phototransistor is a semiconductor light sensor formed from a basic transistor with a transparent cover that provides much better…
Measurement Systems | Functions & Applications
The measurement of a given quantity is essentially an act or result of comparison between a quantity, whose magnitude (amount)…
Functional Elements of an Instrumentation System
An Instrument may be defined as a device or a system which is designed to maintain a functional relationship between…