GETCO Exam Paper (22-07-2015) Two watt meter method for 3 phase circuit is preferred over other methods because it can be used for balanced or unbalanced load all are correct it can be used for star or delta connected load PF of the load can also be estimated it can be used for balanced or unbalanced load all are correct it can be used for star or delta connected load PF of the load can also be estimated ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) No load efficiency of tranformer is _____ than full load efficiency depends on load greater lesser same depends on load greater lesser same ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 7\8 6\7 5\6 2\3 7\8 6\7 5\6 2\3 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP fractional pitch = Cos( α/2)α is obtain from: (nα/2)=90˚ where n is harmonicα=25.7143˚fractional pitch=6/7
GETCO Exam Paper (22-07-2015) The power factor of the arc in circuit breaker is always zero always unity always leading always lagging always zero always unity always leading always lagging ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Current chopping phenomenon is related to capacitance switching small inductive current resistance switching asymmetrical current capacitance switching small inductive current resistance switching asymmetrical current ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The fault occurring in transmission actually are mostly L-L L-G L-L-L L-L-G L-L L-G L-L-L L-L-G ANSWER DOWNLOAD EXAMIANS APP
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