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MCQs 1: Pin type insulators are generally not used for voltages beyond_________?

1 kV 11 kV 22 kV 33 kV
Answer Explanation

MCQs 2: The current drawn by the line due to corona losses is___________?

non-sinusoidal sinusoidal triangular square
Answer Explanation

MCQs 3: The use of strain type insulators is made where the conductors are__________?

dead ended at intermediate anchor towers any of the above none of the above
Answer Explanation

MCQs 4: The voltage drop, for constant voltage transmission is compensated by installing__________?

inductors capacitors synchronous motors all of above none of the above
Answer Explanation

MCQs 5: jCorona usually occurs when the electrostatic stress in air around the conductor exceeds?

6.6 kV (r.m.s. value)/cm 11 kV (r.m.s. value)/cm 22 kV (maximum value)/cm 30 kV (maximum value)/cm
Answer Explanation

MCQs 6: In a substation the following equipment is not installed?

exciters series capacitors shunt reactors voltatre transformers
Answer Explanation

MCQs 7: For which of the following equipment current rating is not necessary?

Circuit breakers Isolators Load break switch Circuit breakers and load break switches
Answer Explanation

MCQs 8: A circuit is disconnected by isolators when____________?

line is energized there is no current in the line line is on full load circuit breaker is not open
Answer Explanation

MCQs 9: By which of the following a bus-bar is rated?

Current only Current and voltage Current, voltage and frequency Current, voltage, frequency and short time current
Answer Explanation

MCQs 10: In aluminium conductors, steel core is provided to____________?

compensate for skin effect neutralise proximity effect reduce line inductance increase the tensile strength
Answer Explanation

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