Fleming’s Left Hand Rule and Right Hand Rule

In this article, we will learn about two fundamental Fleming rules given by John Ambrose Fleming, known as Fleming’s Left Hand Rule and Fleming’s Right … Read more

Single Phase Transformer and Application of Single Phase Transformer

The transformer transforms voltage from one level to another without changing the power and frequency. The transformer is static electrical equipment, and it does not … Read more

Shell Type Transformer- Construction, Working & Applications

The HV and LV winding is wound around the central limb. The central limb carries the entire flux (Ф ). The flux (Ф ) divides into two equal part and thus each side limbs carries the half (Ф/2 ) of the total flux(Ф ). As a result, cross section area of the central limb is two times of the side limbs area.The arrangement of the winding around the central limb is as given below.

Transformer Ratings- Formulas and Solved Problems

The maximum current a transformer can deliver to loads at the rated voltage is known as a transformer rating. It is expressed in VA, kVA, … Read more

Why Motor rated in KW instead of KVA?

The induction motor and the transformer work on the same principle, that is, Faraday’s law of electromagnetic induction. The motor is rated in kW instead of KVA, … Read more

What is the Difference between kW and kVA?

kW is the unit of active power that is consumed by the load for doing real work. The real power drawn from the system is … Read more

Electric Current and Theory of Electricity

What is Electric Current? The electric current flows in the circuit if a potential difference exists. The potential difference is the pressure that causes the … Read more

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. … Read more

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. … Read more

Why Induction Motor Takes High Starting Current?

Working Principle of Induction Motor: The induction motor draws a high starting current compared to the running condition. The starting current of the induction motor … Read more