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…
Protective Relays Interview Questions and Answers: 1. What is a protective relay ? Ans. Protective relay is an electrical device designed to initiate isolation of a part of an electrical…
High Voltage DC Transmission Interview Questions and Answers: 1. Why is voltage regulation better in case of dc transmission ? Ans. Because of absence of inductance in dc systems. 2.…
Performance of Long Transmission Lines Interview Questions and Answers: 1. What is the range of surge impedance for an overhead transmission line ? Ans. 400-600 Ω. 2. What is the…
Performance of Short and Medium Transmission Lines Interview Questions and Answers: 1. What are the factors which govern the performance of a transmission line ? Ans. The factors governing the…
Transmission Line Constants Interview Questions and Answers: 1. Distinguish between ac and dc resistances of a conductor. Why the two differ ? Ans. The resistance offered to dc, by a…
Interconnected Systems Interview Questions and Answers: 1. Why are alternators put in parallel ? Ans. For high efficiency of operation, reliability, convenience and economy in maintenance and repair and possibility…
Three Phase Cycloconverter - Types, Working and Applications: A cycloconverter converts ac at one frequency to an ac of another frequency. Cycloconverters can be classified as single-phase to single-phase, three-phase…