GETCO Exam Paper (30-11-2008) In the parallel operation of transformers, which statement is false None of these transformers transformation ratios same transformers voltage ratings same transformers kVA ratings equal None of these transformers transformation ratios same transformers voltage ratings same transformers kVA ratings equal ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The recovery voltage will be maximum for p.f. of zero 0.707 unity 0.5 zero 0.707 unity 0.5 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) If a power system is transiently stable, it both (a) & (c ) may be dynamically unstable will oscillate beyond the first swing is always dynamically stable both (a) & (c ) may be dynamically unstable will oscillate beyond the first swing is always dynamically stable ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Which loss in a transformer varies significantly with load? Eddy current loss Core loss Hysteresis loss Copper loss Eddy current loss Core loss Hysteresis loss Copper 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) If a combination of HRC fuse and a C.B. is employed, the C.B. operates for under all abnormal currents low over load currents short circuit currents this combination is never employed in practice under all abnormal currents low over load currents short circuit currents this combination is never employed in practice ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) A CB under normal conditions, should be inspected once in 3 or 6 months 5 years a week a month 3 or 6 months 5 years a week a month ANSWER DOWNLOAD EXAMIANS APP
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