GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Load power factor Harmonics Switching over voltages Corona Load power factor Harmonics Switching over voltages Corona ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Steady state stability of a power system is improved by decreasing generator inertia by fast switching using double circuit line instead of single circuit line reducing fault clearing time decreasing generator inertia by fast switching using double circuit line instead of single circuit line reducing fault clearing time ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Critical clearing time of a fault in a power system is related to Reactive power limit Short circuit limit Transient stability limit Steady state limit Reactive power limit Short circuit limit Transient stability limit Steady state limit ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a given current transformer, If permissible current ratio error rated primary current is 5% the CT is suitable for protection purpose as power transformer measuring purpose both measuring and protection protection purpose as power transformer measuring purpose both measuring and protection ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) An over-current relay of current rating 5 A and setting 150% is connected to a 200/5 A CT. Then the relay to pickup, the line current required is 300 150 200 100 300 150 200 100 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In synchronous motor, V-curve is a graph of Armature current Vs reactive power Armature current Vs power factor Armature current Vs active power Armature current Vs Field current Armature current Vs reactive power Armature current Vs power factor Armature current Vs active power Armature current Vs Field current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
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