Temperature Coefficient of Resistance- Formula & Solved Problems
The temperature coefficient of resistance is the parameter that shows the relationship between the variation of resistance with an increase in temperature. The resistance of
Electron Volt or eV | Unit of Energy
In atomic and nuclear physics, the electron Volt or eV is used as a unit of energy. Joule is also a unit of energy, but
Electric Current and Theory of Electricity
What is an Electric Current? The electric current flows in the circuit if a potential difference exists. The potential difference is the pressure that causes
Measurement of Insulation Resistance
What is Insulation Resistance Test or IR Test? The Insulation Resistance Test measures the Insulation resistance of a device under test, while phase and neutral
How to Calculate NGR Resistance Value?
What is NGR? NGR-Neutral Grounding Resistance. NGR limits the ground fault current to the equipment’s safe operating current range to protect all the electrical equipment.
Transformer Basics & Its Working Principle
What is a Transformer? The transformer is a static device that transfers electrical energy from one circuit to another circuit without altering the frequency. The
Efficiency of Transformer
The transformer is a vital link between the load and the supply. The efficiency of the transformer is very important in view of energy saving.
EMF Equation of Transformer | Turns Ratio of Transformer
EMF equation of transformer is very important for understanding the working of the transformer. When a sinusoidal voltage is applied to the primary of the
Why Making Current of Circuit Breaker is More than Breaking Current?
What is the Making and Breaking Current of Circuit Breaker? The circuit breaker is used for switching the circuit on and off and also for
Rotating Magnetic Field in Three Phase Induction Motor
The stator of an induction motor consists of a number of overlapping windings offset by an electrical angle of 120°. When the primary winding or stator is