GETCO Exam Paper (22-07-2015) Penalty factor in power system economical operation is measure of generation cost Line loss fuel cost all are correct generation cost Line loss fuel cost all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In the standard B-H curve X axis and Y axis intercepts respctively represents residual magnetism and coercive force coercive force and residual magnetism Flux and MMF Hysteresis loss and Flux residual magnetism and coercive force coercive force and residual magnetism Flux and MMF Hysteresis loss and Flux ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The Y bus matrix is a sparse matrix because … Y primitive is a sparse matrix no of lines are less bus incidence matrix is a sparse matrix lines are connected to less no. of buses Y primitive is a sparse matrix no of lines are less bus incidence matrix is a sparse matrix lines are connected to less no. of buses ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 2\3 6\7 5\6 7\8 2\3 6\7 5\6 7\8 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) Steady state stability of a power system is improved by using double circuit line instead of single circuit line decreasing generator inertia reducing fault clearing time by fast switching using double circuit line instead of single circuit line decreasing generator inertia reducing fault clearing time by fast switching ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a DC motor, back EMF value becomes maximum at _____ no load full load 3/4 load 1/2 load no load full load 3/4 load 1/2 load ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “1/2 load ”.
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