GETCO Exam Paper (22-07-2015) Switching surges are short duration transient voltage high votage DCs high voltage Acs power frequency voltage short duration transient voltage high votage DCs high voltage Acs power frequency voltage ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is leading lagging zero unity leading lagging zero unity 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 value of holding ratio of relay is always less than 1 zero Infinite greater than 1 less than 1 zero Infinite greater than 1 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Earth wire on EHV overhead transmission line is provided to protect the line against corona effect lightning surge excessive fault voltages switching surge corona effect lightning surge excessive fault voltages switching surge ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Current chopping phenomenon is related to small inductive current capacitance switching resistance switching asymmetrical current small inductive current capacitance switching resistance switching asymmetrical current ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) No load efficiency of tranformer is _____ than full load efficiency same greater lesser depends on load same greater lesser depends on load ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS