What is Transformer?

Transformers are the device which is capable of receiving AC power at one voltage and delivering it at another voltage. In this way  transformer help in achieve better transmission efficiency, while transferring the power over longer distances with high voltages. In this article  we ...Read More

Electrical Formula

The electrical formula for calculating the Horsepower , Watts .Ampere and KVA are given below . Need to find Electrical Formula   Horsepower DC (Volts x Ampere x Efficiency)/746   Horsepower AC (Volts x Amperex1.732xefficiency  x power factor  )/746   Watts DC Volts x ...Read More


This section include MCQs about DC motor for test preparation An electric motor is a machine which convert electrical  energy   in to mechanical energy .Its principle is that when a current carrying conductor is place in a magnetic field its experience a force which ...Read More

What is Insulator ?Its Types

What is Insulator ?It is a material that do not conduct electricity under normal condition.                                                        Or  It is a material whose internal electric charges does not flow freely . Paper, plastic, rubber, glass and air are insulating material .Vacuum is also the insulator ...Read More

Wind speed and energy new research

A new research  suggests that global wind speeds have increased substantially since 2010 after decades of decline.Due to which wind energy increase 37% Scientists believe that  due to the changes in the patterns of ocean and atmospheric circulation the wind speed increased . The ...Read More

What is Inverter ?

What is inverter?Its is an electrical device which is used to converts DC voltage into  AC Voltage of specific level which is used in the home. In short its converts  DC current  into in to AC current Dc current is used in many of ...Read More

What is circuit Breaker ?

What is Circuit breaker ?A circuit breaker is an electrical switches operate automatically which is used to protect an electrical circuit from damage due to  excessive current flowing through it when the circuit is overload or short circuit.Basic function  of circuit breaker is to interrupt current ...Read More