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Instrumentation

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Underdamped, Overdamped and Critically damped Graphical Representation

Damping Systems – Air friction, Fluid Friction & Eddy Current Damping

  • Categories Measurement, Instrumentation

In this article, you will learn about  four different types of damping systems namely air friction damping, fluid friction damping, eddy current damping and electromagnetic damping. Before going into the …

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Electrodynamometer or Electrodynamic instrument

Electrodynamometer Instruments – Ammeter, Voltmeter and Wattmeter

  • Categories Measurement, Instrumentation

The electrodynamometer is a transfer-type instrument. A transfer-type instrument is one that may be calibrated with a dc source and then used without modification to measure AC. This requires the …

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Moving Iron Instruments Banner

Moving Iron Instruments – Attraction and Repulsion Type

  • Categories Instrumentation, Measurement

The most common ammeters and voltmeters for laboratory or switch-board use at power frequencies are the moving iron instruments. These instruments can be constructed to measure current and voltage to …

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Moving coil instrument construction

Permanent Magnet Moving Coil (PMMC) Instrument

  • Categories Measurement, Instrumentation

The permanent magnet moving coil instrument is the most accurate type of DC measurement. It is one of the two types of moving coil instruments used to measure dc work …

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Types of Inductors

Inductors and Inductance : Working, Unit, Function, Types and Uses

  • Categories Basic Electrical, Electrical Circuits, Instrumentation

Inductors are electrical components that oppose the flow of alternating current (AC) by temporarily storing energy as magnetic fields. The action of an inductor is known as Inductance. This article …

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Three wattmeter method of measuring three phase power

Measurement of Three Phase Power | Wattmeter Methods

  • Categories Measurement, Basic Electrical, Instrumentation, Power System, Substation

This article explains the measurement of three-phase power in star connected or delta connecter load using the wattmeter methods. The power in a three phase load can be measured by …

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Current 2BTransformer 2BConstruction 2Bor 2BCircuit 2BDiagram 2Band 2BSymbol

Current Transformer (CT) – Construction and Working Principle

  • Categories Circuit Breaker, Electrical Machines, Generation, Instrumentation, Measurement, Power System, Substation, Switchgear, Transformer

A current transformer (CT) is a type of transformer that is used to measure AC current. It produces an alternating current (AC) in its secondary which is proportional to the AC …

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Low voltage Switchgear

Low Voltage Switchgear

  • Categories Power System, Circuit Breaker, Electrical Relays, Generation, Instrumentation, Measurement, Substation, Switchgear

As per IEC 60947, switchgears with rated voltages up to 1000 V ac and 1500 V dc are termed as low voltage switchgear. The term ‘switchgear’ is a generic term …

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Types of analog instruments

Three Types of Analog Instruments

  • Categories Instrumentation, Basic Electrical, Measurement

An analog instrument is one in which the output or display is a continuous function of time and bears a constant relation to its input. The analog instruments find extensive …

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