Transmission and distribution questions with answers
95 multiple-choice questions. Open any question for its answer and explanation.
- When a conductor carries more current on the surface as compared to core, it is due to
- When an alternator connected to the bus-bar is shut down the bus-bar voltage will
- The operating voltage of high voltage cables is up to
- For aluminium, as compared to copper, all the following factors have higher values except
- In the analysis of which of the following lines shunt capacitance is neglected?
- Series capacitors on transmission lines are of little use when the load VAR requirement is
- In AC.S.R. Conductors, the insulation between aluminium and steel conductors is
- The skin effect of a conductor will reduce as the
- The current drawn by the line due to corona losses is
- The spacing between phase conductors of a 220 kV line is approximately equal to
- Large industrial consumers are supplied electrical energy at
- The voltage drop, for constant voltage transmission is compensated by installing
- Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system?
- Most of the high voltage transmission lines in India are
- The voltage of the single phase supply to residential consumers is
- Which of the following materials is not used for transmission and distribution of electrical power?
- For transmission of power over a distance of 500 km, the transmission voltage should be in the range
- For which of the following equipment current rating is not necessary?
- Which of the following is the demerit of a 'constant voltage transmission system' ?
- The voltage regulation in magnetic amplifier type voltage regulator is effected by
- By which of the following methods string efficiency can be improved?
- When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?
- Galvanized steel wire is generally used as
- Corona usually occurs when the electrostatic stress in air around the conductor exceeds
- Multi-core cables generally use