GETCO Exam Paper (30-11-2008) Dynamic stability characteristics are predominant in the period immediately following a loss of load while governor is in action between the time the governors start reacting and when the steady-state stability is reached both (b) & (c ) immediately following a loss of load while governor is in action between the time the governors start reacting and when the steady-state stability is reached both (b) & (c ) ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Power system A is operating in parallel with other systems and has a frequency bias of 50 MW/0.1 Hz. For a loss of generation in one of the interconnected systems resulting in a frequency drop of 0.02 Hz, system A should provide 20 MW of support not be affected provide 30 MW support provide 10 MW of support provide 20 MW of support not be affected provide 30 MW support provide 10 MW of support ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) In the parallel operation of transformers, which statement is false transformers transformation ratios same None of these transformers voltage ratings same transformers kVA ratings equal transformers transformation ratios same None of these transformers voltage ratings same transformers kVA ratings equal ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The power transmitted will be maximum when reactance is high receiving end voltage is more sending end voltage is more corona losses are least reactance is high receiving end voltage is more sending end voltage is more corona losses are least ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Which loss in a transformer varies significantly with load? Copper loss Hysteresis loss Eddy current loss Core loss Copper loss Hysteresis loss Eddy current loss Core 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 recovery voltage will be maximum for p.f. of 0.707 unity zero 0.5 0.707 unity zero 0.5 ANSWER DOWNLOAD EXAMIANS APP
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