Air Break Switch – Types and Uses
An “air break switch’ is a switchgear device that uses air as the dielectric. Air Break Switches (ABS) are widely … Continue Reading
Electrical Machines
Basic Types of Switchgear Components
Before learning about different switchgear components, let us understand what is switchgear. The apparatus used for switching, controlling and protecting … Continue Reading
What are Protective Relays? | Types and Working
What is a Protective Relay? The protective relay was invented more than 160 years ago. During the last 60 years, … Continue Reading
Why Transformer does not work on DC supply?
Did you ever think about what will happen to a transformer on dc supply? In this article, you will learn … Continue Reading
How to Change the Direction of Rotation of a DC Motor?
DC motors are widely used in various applications, from robotics and industrial machinery to household appliances and automotive systems. One … Continue Reading
Swinburne’s Test of DC Machine (Generator and Motor)
Swinburne’s test is the simplest indirect method of testing dc machines. In this method, the dc machine (generator or motor) … Continue Reading
Testing of DC Machines (DC Motor and DC Generator)
There are several tests that are conducted for testing a dc machine (generator or motor) to judge its performance. The most important … Continue Reading
Working Principle of Transformer
A transformer is a static piece of equipment used either for raising or lowering the voltage of an AC supply … Continue Reading
Electrical and Mechanical Noise in Motors
Two types of noises occur in an electric motor, one is electrical noise and the other is mechanical noise. The … Continue Reading
Back EMF and Its Significance in DC Motor
What is Back EMF? When the armature of a DC motor rotates under the influence of the driving torque, the armature … Continue Reading