GETCO Exam Paper (22-07-2015) Critical clearing time of a fault in a power system is related to Transient stability limit Steady state limit Short circuit limit Reactive power limit Transient stability limit Steady state limit Short circuit limit Reactive power limit ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In load flow analysis, the load at the bus is represented as none of these a voltag dependent impedance at the bus a constant impedance connected at the bus a constant current drawn from the bus none of these a voltag dependent impedance at the bus a constant impedance connected at the bus a constant current drawn from the bus ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For a given transformer volte/turn for primary and secondary winding is depends on transformer design depends on load different same depends on transformer design depends on load different same ANSWER EXPLANATION DOWNLOAD EXAMIANS APP emf = 4.44*f*φ*Temf/T = 4.44*f*φ
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 6\7 2\3 7\8 5\6 6\7 2\3 7\8 5\6 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) In case of HVDC transmission there is _____ no charging current no skin effect no charging current but skin effect both charging effect and skin effect charging current but no skin effect no charging current no skin effect no charging current but skin effect both charging effect and skin effect charging current but no skin effect ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In synchronous motor, V-curve is a graph of Armature current Vs Field current Armature current Vs active power Armature current Vs power factor Armature current Vs reactive power Armature current Vs Field current Armature current Vs active power Armature current Vs power factor Armature current Vs reactive power ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
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