GETCO Exam Paper (22-07-2015) For formation of the Y bus matrix (using node voltage analysis) in power system network modelling _____ is used KCL KVL Faraday's law all are correct KCL KVL Faraday's law all are correct ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Laplace transforms is used for converting diffential equation to algebraic equation for finding initial condition in a system converting non linear equation to linear equation finding transfer function of any systems converting diffential equation to algebraic equation for finding initial condition in a system converting non linear equation to linear equation finding transfer function of any systems ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is zero unity leading lagging zero unity leading lagging 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) Fast excitation system of the generator will _____ Improve the dynamic stability Improve the voltage control Improve the reactive power control Improve the power factor Improve the dynamic stability Improve the voltage control Improve the reactive power control Improve the power factor ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) What is the surge impedance loading of 400 kV line with surge impedance given as 160 Ω 400 MW 250 MW 1000 MW 1000 kW 400 MW 250 MW 1000 MW 1000 kW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP SIL = (kV)²/Z₀
GETCO Exam Paper (22-07-2015) During the insulation co-ordination in the sub station, the lowest insulation strength is at transformer circuit breaker bus bar CTs and PTs transformer circuit breaker bus bar CTs and PTs ANSWER DOWNLOAD EXAMIANS APP
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