GETCO Exam Paper (22-07-2015) Root Locus is locus of the _____ close loop poles to close loop zeros open loop zeros to close poles close loop poles open loop poles to open loop zeros close loop poles to close loop zeros open loop zeros to close poles close loop poles open loop poles to open loop zeros ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is zero lagging unity leading zero lagging unity leading 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) 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) The area under the load duration curve represents energy generated in the period considered base load of the system Maximum demand of the power station average load of the system energy generated in the period considered base load of the system Maximum demand of the power station average load of the system ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Speed of induction motor at rated torque is _____ than at maximum torque. greater same depends on load lesser greater same depends on load lesser ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) No load efficiency of tranformer is _____ than full load efficiency lesser same depends on load greater lesser same depends on load greater ANSWER DOWNLOAD EXAMIANS APP
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