Unsymmetrical Fault Analysis Interview Questions and Answers: 1. Draw the sequence network for single line-to-ground fault without fault impedance. Ans. 2. Draw the sequence network connections corresponding to L-L fault at a bus. Ans. 3.…
Symmetrical Fault Analysis Interview Questions and Answers: 1. What is meant by fault level ? Ans. When fault occurs at a point in a power system, the corresponding MVA is referred to as the fault…
Symmetrical Components Interview Questions and Answers: 1. What do you mean by Fortescue theorem. Ans. According to Fortescue theorem, any unbalanced three-phase system of currents, voltages or other sinusoidal quantities can be resolved into three…
Representation of Power System Components Interview Questions and Answers: 1. What is meant by percentage reactance ? Ans. Percentage reactance can be defined as the voltage drop across the given reactance expressed as percentage of…
Switchgear and Protection Interview Questions and Answers: 1. What is meant by short circuit ? Ans. When conductors of different phases come into contact with each other in a power line, power transformer, or any…
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. Why there is no limit…
High Voltage AC Transmission Interview Questions and Answers: 1. What are the transmission voltages that are used in India ? Ans. 33, 66, 110, 132, 220 and 400 kV. 765/800 kV is also in used…
Interference of Power Lines Interview Questions and Answers: 1. How do power lines cause interference with neighbouring communication lines ? Ans. The transmission lines transmit bulk power at relatively higher voltages and, therefore, these lines…
Insulation Resistance of a System Interview Questions and Answers: 1. What are the faults that are likely to occur in cables ? Ans. The faults which are likely to occur in cables are open circuit,…
AC Distribution Interview Questions and Answers: 1. What is primary distribution system and what is normal operation voltage of primary distribution ? Ans. Primary distribution system is that part of the distribution system which operates…