## how to calculate cable size for electrical works

HOW TO CALCULATE CABLE SIZING why we need to calculate cable sizing for electrical works. this questions most commonly asked by our electrical folks. The reason is when we want transfer electrical power from one place to other we need to use electrical cable. so the sizing of cable is very important one. when we…

## How to do load calculation

how to do load calculation for office or apartments As an electrical design engineer they should know why load calculation is very important for before doing any electrical works. in general the electrical load calculation is done before they sizing electrical supply for domestic and industrial purpose. here we will see about why we should…

## How to calculate KVAR for capacitor bank design

what is KVAR KVAR is nothing but kilo volt ampere resistance. more over it is loss of energy in electrical system. we all are know in electrical system any electrical equipment while running time which is consider some losses. that los is called reactive power or KVAR. reactive power(Q)= apparent power(S) – real power (P)…

## How to calculate short circuit current for transformer

Short circuit current for transformer: Generally we know short circuit current is nothing but low impedance path having abnormal contacts between two points of different  potentials. so short circuit calculation is very important to protect the equipment and people from high mechanical force and high heat stress. so we need to calculate the short circuit…

## Why we are using carbon brush in motor

Carbon brush: why we are always using carbon brush in  motor instead of using copper or other material brushes. because there are multiple advantages behind in the carbon brushes. so here we will briefly discuss about what are the advantages in using carbon brush in dc motors. Advantages of carbon brush: There are 5 main…

## What is Alternator? How Alternator is working?

What is Alternator: Generally Alternator also called AC generator. Alternator is a machine used to convert the mechanical power into electrical AC power with specific voltage and frequency. Alternator is having stationary armature conductor and rotating magnetic field. the rotating mechanical source is connected to shaft of the alternator. shaft is connected with rotor of…

## difference between squirrel cage and slip ring induction motor

Induction Motor: Most widely used motor in the electrical field is induction motor. This motor is one of the type of AC motor. induction motor is basically running with asynchronous speed. that means speed of the motor is not constant. when ever load increased the speed of the induction motor is reduced. the induction motor…

## What is transistor & How transistor working

Transistor: Transistor is an electronic device and its  made of semiconductor material. mostly silicon used as a semiconductor material. transistor having many uses. transistor act as  a switch, voltage regulation process, modification of signals, amplification of signals. when N-type  or P-type semiconductor  is connected between two P-type or N- type semiconductor then its look like two PN junction diode….

## Difference between conductor and insulator

Difference between conductor and insulator: What is conductor: Generally conductor is a material which is allow the current from one place to another place. otherwise we can say the material which is allowing  current flow then that material is called conductor. the some example of conductor is coper, aluminum, silver, gold, etc. What is insulator:…

## How to get pure sinusoidal AC output from DC input using PWM inverter

What is Inverter: Inverter is an electrical equipment which is used to convert dc supply into AC supply. there are two different types of inverter used in the electrical field. they are given below, square wave inverter sine wave inverter here we will going to see about how to convert pure dc into pure ac…