GETCO Exam Paper (22-07-2015) In differential protection scheme, a stabilizing resistance connected to increase the current limit reduce the effect of non identical CTs block harmonics increase the relay sensitivity increase the current limit reduce the effect of non identical CTs block harmonics increase the relay sensitivity ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following breaking method save energy? plugging dynamic breaking regenerative breaking resistor breaking plugging dynamic breaking regenerative breaking resistor breaking 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) Who is the Energy and Petrochemicals minister of Gujarat? (As on 22/07/2015) Anandiben Patel Nitin Patel Saurabh Patel Bhupendrasinh Chudasama Anandiben Patel Nitin Patel Saurabh Patel Bhupendrasinh Chudasama ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Switching over voltages Harmonics Load power factor Corona Switching over voltages Harmonics Load power factor Corona ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The power factor of the arc in circuit breaker is always lagging always leading always zero always unity always lagging always leading always zero always unity ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is lagging unity leading zero lagging unity leading zero 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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