DGVCL Exam Paper (11-12-2011) If the percentage reactance of the system upto the point of fault is 20% and the base kVA is 10,000 the short ciruit kVA is 60 MVA 50 MVA 20 MVA 10 MVA 60 MVA 50 MVA 20 MVA 10 MVA ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Short circuit kVA = Base kVA/%X
DGVCL Exam Paper (11-12-2011) Transposition of transmission line is done to Balance line voltage drop Reduce line loss Reduce corona Reduce skin effect Balance line voltage drop Reduce line loss Reduce corona Reduce skin effect ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The transient stability of a power system can be improved by Increasing the turbine valve opening Excitation control Single pole switching of circuit breakers Phase shifting transformer Increasing the turbine valve opening Excitation control Single pole switching of circuit breakers Phase shifting transformer ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The mutual inductance between two unity coupled coils of 9 H and 4 H is 6 H 2.2 H 36 H 13 H 6 H 2.2 H 36 H 13 H ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) If the excitation of a synchronous generator fails, it acts as a Induction generator Induction motor Synchronous generator Synchronous motor Induction generator Induction motor Synchronous generator Synchronous motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP if excitation of synchronous generator fails, operate as induction motor
DGVCL Exam Paper (11-12-2011) Fot fast load flow calculations, the best method is Approximate method De-coupled method Newton-Raphson Gauss-Siedal Approximate method De-coupled method Newton-Raphson Gauss-Siedal ANSWER DOWNLOAD EXAMIANS APP
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