GETCO Exam Paper (22-07-2015) Shunt compensation in EHV line is resorted to Improve the stability Increase line impedance Reduce the fault level Improve voltage profile Improve the stability Increase line impedance Reduce the fault level Improve voltage profile ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) What is the surge impedance loading of 400 kV line with surge impedance given as 160 Ω 400 MW 1000 MW 250 MW 1000 kW 400 MW 1000 MW 250 MW 1000 kW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP SIL = (kV)²/Z₀
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 7\8 5\6 2\3 6\7 7\8 5\6 2\3 6\7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP fractional pitch = Cos( α/2)α is obtain from: (nα/2)=90˚ where n is harmonicα=25.7143˚fractional pitch=6/7
GETCO Exam Paper (22-07-2015) For selecting low voltage cable which of the following factors is not important? voltage grade current carrying capacity permissible voltage drop short circuit current rating voltage grade current carrying capacity permissible voltage drop short circuit current rating ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Differential equation is required to be solved in _____ economical operation of power systems Stability studies Finding efficiency of a transmission line Load flow studies economical operation of power systems Stability studies Finding efficiency of a transmission line Load flow studies ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The magnitude of sum of two sinusoidal AC voltages is equal to the magnitude of each individual voltage, What must be the phase difference between voltages? 120 180 60 90 120 180 60 90 ANSWER DOWNLOAD EXAMIANS APP
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