What is Peak Value, Average Value and RMS Value?
Peak Value The sinusoidal waveform starts from zero, attains peak value, and again comes down to zero in a positive half cycle. In the next … Read more
Basics
Difference between AC and DC Relay
What is a relay Coil? The relay coil has many turns of copper wire wound around a bobbin in which the iron core is situated. … Read more
Windage losses in Electric Machines
Windage is the name usually given to air resistance inside rotating electrical machines like generators or motors. Windage losses also occur in machines such as turbines and gearboxes. When … Read more
What is Magnetic reluctance – Definition
The reluctance is the property of the magnetic material, which provides opposition to the flow of magnetic flux through a given volume of space or … Read more
What is Self Inductance? Definition and Explanation
The coil opposes the change of current flowing through it. This property of the coil is called Self-inductance. The opposition offered by a coil depends on the … Read more
Difference between Rated,Nominal and Operating Voltage
In this post, we will discuss the difference between rated, nominal, and operating voltage. Operating at the designed operating voltage enhances the equipment’s life. There … Read more
Electrical Insulation Classes | Classification of Insulating Materials
The life of electrical insulating materials gets adversely affected by the rise in temperature. Average insulation life gets halved for every 10° C increase in temperature. Therefore, the classification … Read more
What is Hysteresis Loop? Its Importance
A hysteresis loop is a graph in a four-quadrant that shows the relationship between the induced magnetic flux density B and the magnetizing force H. … Read more
Harmonic Restraining in Differential Protection
The differential relay is used for the protection of the transformer, alternator, and large-rating HT motor. The differential protection scheme is also known as zone … Read more
Why Power in Pure Inductive and Pure Capacitive Circuit is Zero?
This article describes why the power in pure inductive and capacitive circuits is zero. The inductors and capacitors are the basic building blocks of an … Read more