What is Synchronous speed? Relationship between speed and Frequency
Synchronous Speed When three phases which are 120 degree-electrical apart are fed to the stator winding of the induction motor, a rotating magnetic field is … Read more
Electrical
Slip Speed in an Induction Motor
A rotating magnetic field is produced when three phase supply is fed to stator of an induction motor. The rotating magnetic field has constant magnitude … 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
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
Effects of Harmonics on Capacitors | Interaction of Harmonics with Capacitors
The adverse Effects of Harmonics on Capacitors comprise series and parallel resonance, heating, overloading, and increased dielectric loss. The harmonics also cause a severe problem of … Read more
Ideal Transformer-Properties, Phasor Diagram, Working
What is an Ideal Transformer? An ideal transformer is free from all losses. It has zero copper and iron loss and zero leakage flux, and … Read more
Effects of Harmonics on Power Cables
Power cables carry power from the supply source to the load point. They have DC resistance, which depends on their size. When current flows through … 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