GETCO Exam Paper (22-07-2015) Shunt capacitors in a substation delivers lagging VAR consumes lagging VAR deliver active power consume active power delivers lagging VAR consumes lagging VAR deliver active power consume active power ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on rotor resistance and reactance stator reactance load current stator resistance rotor resistance and reactance stator reactance load current stator resistance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) The mechanical angle is _____ electrical angle same always less lesser than or equal to greater than or equal to same always less lesser than or equal to greater than or equal to ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Electrical angle = (P/2)*mechanicla angle
GETCO Exam Paper (22-07-2015) In synchronous motor, V-curve is a graph of Armature current Vs active power Armature current Vs reactive power Armature current Vs power factor Armature current Vs Field current Armature current Vs active power Armature current Vs reactive power Armature current Vs power factor Armature current Vs Field current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Harmonics Switching over voltages Load power factor Corona Harmonics Switching over voltages Load power factor Corona 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 both measuring and protection measuring purpose protection purpose as power transformer both measuring and protection measuring purpose ANSWER DOWNLOAD EXAMIANS APP
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