Why IGBT is very popular nowadays? Lower hate requirements Lower switching losses Smaller snubber circuit requirements What are the different…
1. What is electric traction? Electric traction means using the electric power for traction system (i.e. for railways,trams, trolleys etc).…
Lap winding is suitable for high current and low voltage generators while wave winding is suitable for high voltage and…
What are the advantages and disadvantages of Induction Motors? Advantages: It is simple and rugged in construction It is relatively…
When DC Generator fails to build up the voltage, what are the reasons? No residual magnetism, reversal of field connections…
Inrush Currents in Transformers - Causes When a transformer is energized after a short interruption, the transformer may draw high…
Auto-transformer Advantages: Auto-transformers in comparison with the double winding transformers are generally advantageous of the voltage ratio is favorable from…
Insulation Materials used in Transformers and Induction Motors Insulation materials used in transformers and motors are classified based on the…
Where Star (wye) Delta transformer is used in Power system Star-Delta Transformer (Y-Δ ) Primary Y (High Voltage side) and…
What is protective relay? It is an electrical device designed to initiate the isolation of a part of the electrical…
