
Electrical Engineering : Power Systems QUESTIONS AND ANSWERS :: part3 : 6 to 10
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.The order of the sub-harmonic during SSR for 50 Hz nornal frequency is |
25 Hz |
16 2/3 Hz |
10 HZ |
none of the above |
7.Corona losses are minimized when |
conductors size is reduced |
smooth conductor is reduced |
sharp points are provided in the line hardware |
current density in conductors is reduced |
8.The non-uniform distribution of voltage across the units in a string of suspention type insulators is due to |
unequal self-capacitance of the units |
non-uniform distance of separation of the units from the tower body |
the existence of stray capacitance between the metallic junctions of the units and the tower body |
non-uniform distance between the cross-arm and the units |
9.For a long uncompensatedline the limit to the line loading ill governed by |
thermal limit |
voltage drop |
stability limit |
corona loss |
10.The time taken for a surge to travel a 600 km long overhead transmission line is |
6s |
1s |
0.02s |
0.002s |
More Power Systems QUESTIONS AND ANSWERS available in next pages
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