Electrical Engineering Questions And Answers :: Power Systems: part3

Electrical Engineering : Power Systems QUESTIONS AND ANSWERS :: part3 : 1 to 5

Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

1.An RLC series. circuit remains predominantly inductive

at resonance frequency
below resonance frequency
above resonance frequency
at the lower half power frequency

2.A voltage of 1000 kV is applied to an overhead line with its receiving end open. If the surge impedance of the line is 500 ohm, then the total surge power in the line ill

2000 MW
500 MW
2 MW
0.5 MW

3.A lossless radial tranemission line with surge impedance loading

takes negative VAr at sending end and zero VAr at receiving end
takes positive VAr at sending end and zero VAr at receiving end
has flat voltage profile and unity power factor at all points along it
has sending end voltage higher than receiving end voltage and unity power factor at sending end

4.The corona loss on a particular system at 50 Hz is 1 kw/phase per km. The corona loss on the same system with supply frequency 25 Hz will be

1 kW/phase/km
0.5 kW/phase/km
0.667 kW/phase/km
none of the above

5.A 60 Hz, 320 km loesless line has Bending end voltage 1.0 p.u, The receiving end voltage on no load is

1.1 p.u.
1.088 p.u.
1.116 p.u.
none of the above

More Power Systems QUESTIONS AND ANSWERS available in next pages

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