# 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 ANSWER : : be 0.707 lagging Explanation :
 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 ANSWER : : long line Explanation :
 18.Bundled conductors are employed to reduce the short circuit current improve system stability decreases system stability increase the short circuit current ANSWER : : decreases system stability Explanation :
 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 ANSWER : : 9.7 pF/m Explanation :
 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 ANSWER : : 0.79 nIkm Explanation :

More Power Systems QUESTIONS AND ANSWERS available in next pages

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