GETCO Exam Paper (30-11-2008) Bulk-oil CBs can be used for voltage upto 33 kV 1.1 kV 11 kV 66 kV 33 kV 1.1 kV 11 kV 66 kV ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Which loss in a transformer varies significantly with load? Core loss Eddy current loss Copper loss Hysteresis loss Core loss Eddy current loss Copper loss Hysteresis loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP During O.C test obtained no load losses (core loss)During S.C. test obtained copper loss (load losses)during loaded condition of transformer copper loss more significant than core loss.
GETCO Exam Paper (30-11-2008) The arc voltage in a C.B. is _____ with the arc current none of these in phase lagging by 90˚ leading by 90˚ none of these in phase lagging by 90˚ leading by 90˚ ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Directional over current relays have two exciting coils connected across _____ secondary's of two _____ phases T. & P.T., same T., different P.T., different T. & P.T., different T. & P.T., same T., different P.T., different T. & P.T., different ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) If a power system is transiently stable, it may be dynamically unstable both (a) & (c ) will oscillate beyond the first swing is always dynamically stable may be dynamically unstable both (a) & (c ) will oscillate beyond the first swing is always dynamically stable ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The C.B.s which produces the least arc energy are plain oil air break air blast minimum oil plain oil air break air blast minimum oil ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS