Electrical Engineering Guides

Power Systems

Capacitance Meter

A capacitance meter is a piece of electronic test equipment whose purpose is to measure capacitance, mostly of discrete capacitors . The capacitance meter works based off of the directly proportional relationship between capacitance and a time constant. This relation is used in this method of measur

By Electrical4u 03/27, 2024
Power Systems

Ohmmeter: How Does it Work? (Series, Multi-Range & Shunt Type Ohm Meters)

What is an Ohmmeter? An ohmmeter (also known as an ohm meter ) is an instrument that measures the electrical resistance of a material (resistance is a measure of the opposition to the flow of electric current ). Micro-ohmmeters (micro ohmmeter or microhmmeter) and Milliohmmeters make low resistance

By Electrical4u 03/27, 2024
Power Systems

Vector Impedance Meter

Impedance, which is having both magnitude and phase, is truly an opponent to the flow of current in AC circuits with the presence of an applied voltage . The Vector Impedance Meter is employed for measuring both the amplitude and phase angle of impedance (Z). Normally, in other measuring techniques

By Electrical4u 03/27, 2024
Power Systems

Protection of Meters

When we measure an electrical signal there very often may be a chance of over current through the meter. This may be due to following reasons. The meter may be connected wrongly to the circuit. The rating of the meter is selected wrongly for the measurement. Occurrences of over current in the circui

By Electrical4u 03/27, 2024
Power Systems

Working Principle of Voltmeter and Types of Voltmeter

What is Voltmeter? Voltmeter is a voltage meter. Which measures the voltage between the two nodes. We know the unit of potential difference is volts. So it is a measuring instrument which measures the potential difference between the two points. Working Principle of Voltmeter The main principle of v

By Electrical4u 03/27, 2024
Power Systems

Ammeter Working Principle and Types of Ammeter

Introduction of Ammeter As we know a word “meter” is associated with the measurement system. Meter is an instrument which can measure a particular quantity. As we know, the unit of current is Ampere. Ammeter means Ampere-meter which measures ampere value. Ampere is the unit of current so an ammeter

By Electrical4u 03/27, 2024
Power Systems

Phase Sequence Indicator

We have three phase system and by convention we write three phases as RYB. Phase sequence indicator is the indicator that determines the phase sequence of the three phase supply system. When we give conventional three phase supply (i.e. RYB) to the induction motor , we see that the direction of the

By Electrical4u 03/27, 2024
Power Systems

Power Factor Meters | Electrodynamometer Type Power Factor Meter

Before we introduce various types of power factor meters it is very essential to understand what are the needs of power factor meter? Why we do not directly calculate power factor in an AC circuit just by dividing the power with product of current and voltage because these readings can be easily obt

By Electrical4u 03/27, 2024
Power Systems

Weston Type Frequency Meter

The main principle of working of weston type frequency meter is that “when an current flows through the two coils which are perpendicular to each other, due to these currents some magnetic fields will produce and thus the magnetic needle will deflects towards the stronger magnetic field showing the

By Electrical4u 03/27, 2024
Power Systems

Varmeter | Single Phase and Polyphase Varmeter

The instruments which measure the reactive power of the circuit are called varmeter . What is reactive power? The reactive power in the circuit is given by VIsinA . Here there is no need to give an explanation about the physical meaning of reactive power, as only a mathematical relation is sufficien

By Electrical4u 03/27, 2024
Power Systems

Electronic DC Voltmeter: Definition, Types and Applications

An electronic DC voltmeter is a device that measures the direct current (DC) voltage across any two points of an electric circuit . It is an essential tool for testing, troubleshooting, and designing electronic circuits and devices. Unlike mechanical voltmeters, electronic voltmeters use semiconduct

By Electrical4u 03/27, 2024
Power Systems

Air Flow Meter: Definition, Types, Applications and Benefits

An air flow meter is a device that measures the rate, pressure, and direction of airflow in a duct or pipe. Air flow meters are used for various purposes, such as monitoring ventilation, optimizing combustion, controlling emissions, and ensuring safety. In this article, we will explain what an air f

By Electrical4u 03/27, 2024

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

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Capacitance Meter

Ohmmeter: How Does it Work? (Series, Multi-Range & Shunt Type Ohm Meters)

Vector Impedance Meter

Protection of Meters

Working Principle of Voltmeter and Types of Voltmeter

Ammeter Working Principle and Types of Ammeter

Phase Sequence Indicator

Power Factor Meters | Electrodynamometer Type Power Factor Meter

Weston Type Frequency Meter

Varmeter | Single Phase and Polyphase Varmeter

Electronic DC Voltmeter: Definition, Types and Applications

Air Flow Meter: Definition, Types, Applications and Benefits

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