GETCO Exam Paper (22-07-2015) For formation of the Y bus matrix (using node voltage analysis) in power system network modelling _____ is used KCL Faraday's law KVL all are correct KCL Faraday's law KVL all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 5\6 6\7 7\8 2\3 5\6 6\7 7\8 2\3 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) 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? 60 90 180 120 60 90 180 120 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Shunt compensation in EHV line is resorted to Improve the stability Reduce the fault level Improve voltage profile Increase line impedance Improve the stability Reduce the fault level Improve voltage profile Increase line impedance ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The instantaneous value of power in purely inductive circuit is none of this changing constant zero none of this changing constant zero ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The instantaneous value of power in purely inductive circuit is changing as it is given as v*i. The average power of purely inductive circuit over a cycle is zero
GETCO Exam Paper (22-07-2015) No load efficiency of tranformer is _____ than full load efficiency greater lesser depends on load same greater lesser depends on load same ANSWER DOWNLOAD EXAMIANS APP
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