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PN Junction Questions & Answers
1. Explain what is Fermi level? The maximum energy that an electron in a metal has at the absolute zero ... -
Interview Questions on Battery Testing
Measuring the float voltage of cells is usually easy, but how useful are the results produced by this measurement? In ... -
Electrical Machines Questions and Answers
Lap winding is suitable for high current and low voltage generators while wave winding is suitable for high voltage and ... -
Induction Motor Interview Questions Answers
What are the advantages and disadvantages of Induction Motors? Advantages: It is simple and rugged in construction It is relatively ... -
DC machines and Induction Machines Viva Questions & Answers
When DC Generator fails to build up the voltage, what are the reasons? No residual magnetism, reversal of field connections ... -
Transformers Questions & Answers Part-1
Inrush Currents in Transformers – Causes When a transformer is energized after a short interruption, the transformer may draw high ... -
Transformers Questions & Answers Part-2
Auto-transformer Advantages: Auto-transformers in comparison with the double winding transformers are generally advantageous of the voltage ratio is favorable from ... -
Transformers Questions & Answers Part-3
Insulation Materials used in Transformers and Induction Motors Insulation materials used in transformers and motors are classified based on the ... -
Transformers Questions & Answers Part-4
Where Star (wye) Delta transformer is used in Power system Star-Delta Transformer (Y-Δ ) Primary Y (High Voltage side) and ... -
Power System Protection and Relays Questions & Answers
What is protective relay? It is an electrical device designed to initiate the isolation of a part of the electrical ...