Manish Kumar Saini has Published 922 Answers

Electromechanical Relays – Types and Working Principle

Manish Kumar Saini

Manish Kumar Saini

Updated on 05-Jul-2021 06:45:50

Electromechanical RelayAn electromechanical relay is a type of relay which function using a magnetic field produced by an electromagnetic coil when a control signal is applied to it. It is called as electromechanical since it has moving contacts in the output circuit which are operated by applying an electrical signal.Electromechanical ... Read More

Electricity Tariff: Types and Characteristics

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:34:57

Electricity tariff is defined as the rate at which electrical energy is supplied to a consumer.Types of Tariff in ElectricityThe commonly used electricity tariffs are as follows −Simple Tariff – When there is a fixed rate per unit of energy consumed, it is known as simple tariff or uniform rate ... Read More

Electrical Power System Components

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:29:59

An electrical power system is a network of interconnected electrical devices, which are used to generate, transmit, distribute and utilise the electrical power.A typical electrical power system has following main components −Generating StationTransmission SystemDistribution SystemElectrical LoadGenerating StationIn the single line diagram, the GS represents the generating station where electrical power ... Read More

Electric Power System and Equipment – Voltage Ratings

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:27:54

The voltage levels or voltage ratings are defined and classified by various national and international standards and also by some electrical utility companies.In general, an electrical professional comes across the terms LV / LT, MV, HV / HT, EHV / EHT and UHV in our day-to-day professional lives.Voltage Rating StandardsThe ... Read More

Electric Power Distribution System Basics

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:23:45

What is a Distribution System?The part of the power system that distributes electric power for local use is called as distribution system. Generally, a distribution system is the electrical system between the substation fed by transmission system and the consumer’s meters. A typical distribution system is shown in the figure.Components ... Read More

Electric Machine Losses and Efficiency with Examples

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:18:53

There are two types of electric machines viz. static electric machines (e.g. transformer) and rotating electric machines (e.g. motors and generators). All electric machines are not ideal, therefore they have some losses due to which efficiency being less than 100%. In general, we come across three popular electric machines viz. transformer, ... Read More

Electric Generator: Construction and Working Principle

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:13:16

The electric generator is an electromechanical energy conversion device, which converts mechanical energy into electrical energy.Construction of Electric GeneratorAn electric generator has following main parts −Magnetic Field SystemArmature CoreArmature WindingYokeMagnetic Field SystemThe magnetic field system is used to produce uniform magnetic field in the electric generator within which the armature ... Read More

Capacitors in DC Circuits

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 09:10:58

Capacitor & CapacitanceWhen any two conducting surfaces are separated by an insulating material, it called as a capacitor. The conducting surfaces are known as plates of the capacitor and the insulating material is known as dielectric.The ability of a capacitor to store charge is termed as capacitance of the capacitor. ... Read More

Capacitor Types: Fixed & Variable Capacitors

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 08:57:11

Capacitors can be classified depending upon their fixed or variable capacitance as follows −Fixed CapacitorsThose capacitors whose value of capacitance is fixed during the manufacturing and cannot be changed later are known as fixed capacitors. The symbol of the fixed capacitor is shown in figure.The fixed capacitors are classified into ... Read More

Basics of Three-Phase Electricity

Manish Kumar Saini

Manish Kumar Saini

Updated on 02-Jul-2021 08:45:42

The phase-electricity is produced by a 3-phase generator that has three separate but identical windings, which are called phases. The 3-phase windings of the 3-phase generator are displaced 120° apart from each other and rotate in a common uniform magnetic field. Therefore, a three-phase generator produces three voltages of the ... Read More

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