Electrical Engineering Questions And Answers :: Power Systems: part2

Electrical Engineering : Power Systems QUESTIONS AND ANSWERS :: part2 : 16 to 20

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.If in a short transmission line, resistance and inductance are found to be equal and regulation appear. to be zero, then the load will

have unity power factor
have zero power factor
be 0.707 lagging
be 0.707 lagging

17.For a 500 Hz frequency excitation, a 50 km long power line will be modelled as

short line
medium line
long line
data isufficient decision

18.Bundled conductors are employed to

reduce the short circuit current
improve system stability
decreases system stability
increase the short circuit current

19.A two conductor 1 - pi line operates at 50 Hz. The diameter of each conductor is 20 mm and the spacing between the conductors is 3m, The height of conductor above the ground is 6 m. The capacitance of the line to neutral will be

9.7 pF/m
10.2 pF/m
8.7 uF/km
2.4 uF/m

20.A 1-pi line two conductors operate at 50Hz. The diameter of each conductor is 15 mm, and the spacing between the conductor is 3.5 m. The inductive reactance per km will be

0.43 ClIkm
0.65 0Jkm
0.70 O/km
0.79 nIkm

More Power Systems QUESTIONS AND ANSWERS available in next pages

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