GETCO Exam Paper (22-07-2015) Who is the Energy and Petrochemicals minister of Gujarat? (As on 22/07/2015) Anandiben Patel Saurabh Patel Nitin Patel Bhupendrasinh Chudasama Anandiben Patel Saurabh Patel Nitin Patel Bhupendrasinh Chudasama ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The relay which is most sensitive to power swings (mal operation) is Impedance Relay Reactance Relay Mho Relay Over current Relay Impedance Relay Reactance Relay Mho Relay Over current Relay ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following is a reason to decouple AVR and LFC loops when there is a shortage of reactive power? deference of error is the main reason Change in voltage magnitude marginally affects real power angle of the voltage is not considered AVR loop response is slower than LFC loop deference of error is the main reason Change in voltage magnitude marginally affects real power angle of the voltage is not considered AVR loop response is slower than LFC loop ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following breaking method save energy? resistor breaking regenerative breaking dynamic breaking plugging resistor breaking regenerative breaking dynamic breaking plugging ANSWER EXPLANATION DOWNLOAD EXAMIANS APP three types of electric breaking:Regenerative breaking( leads to economic and energy consevation)pugging (more efficient method of breaking)rheostatic breaking
GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Harmonics Corona Switching over voltages Load power factor Harmonics Corona Switching over voltages Load power factor ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is unity zero lagging leading unity zero lagging 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
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