GETCO Exam Paper (22-07-2015) The fault occurring in transmission actually are mostly L-L L-L-L L-G L-L-G L-L L-L-L L-G L-L-G ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For a given transformer volte/turn for primary and secondary winding is different depends on load same depends on transformer design different depends on load same depends on transformer design ANSWER EXPLANATION DOWNLOAD EXAMIANS APP emf = 4.44*f*φ*Temf/T = 4.44*f*φ
GETCO Exam Paper (22-07-2015) In G-S method of power flow problem, the number of iterations _____ depends on voltage control buses depends on no of buses depends on tolerance remains fixed depends on voltage control buses depends on no of buses depends on tolerance remains fixed ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) To find the most accurate values of resistance and inductance of the transmission line T configuration is used Pi configuration is used End condenser configuration is used Distributed parameter configuration used T configuration is used Pi configuration is used End condenser configuration is used Distributed parameter configuration used ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is leading zero unity lagging leading zero unity lagging ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Voltage regulation = ((no load voltage)-(full load voltage)/(no load voltage))VR at leading PF = ((I*R*cosφ)-(I*X*sinφ))/VVR at lagging PF = ((I*R*cosφ)+(I*X*sinφ))/V
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 5\6 2\3 6\7 7\8 5\6 2\3 6\7 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
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