Substations Interview Questions and Answers: 1. State any four types of substations according to the service ? Ans. The substations, according to the service rendered are: Transformer substations, Switching substations,…

Voltage Control Interview Questions and Answers: 1. Why is it necessary to keep the receiving-end voltage constant within specified limits ? Ans. For satisfactory operation of equipment/machinery supplied by the…

Power System Earthing Interview Questions and Answers: 1. What is difference between system earthing and equipment earthing ? Ans. System earthing deals with earthing of the system neutral to ensure…

Protection against Over voltages due to Lightning Interview Questions and Answers: 1. What is meant by voltage surge ? Ans. By voltage surge is meant any sudden excessive rise in…

Protection of Feeders and Transmission Lines Interview Questions and Answers: 1. What is unit type protection ? Ans. Unit system of protection is one in which the protection responds to…

Bus Bar Protection Interview Questions and Answers: 1. Why use of single bus-bar arrangement is restricted to small and medium sized substations and small power stations ? Ans. The glaring…

Transformer Protection Interview Questions and Answers: 1. What are the faults that are likely to occur in a power transformer ? Ans. The faults likely to occur in a power…