GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 6\7 5\6 7\8 2\3 6\7 5\6 7\8 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) Which of the following is not function of substation batteries? provide supply to the excitation system emergency lighting circuits operating protective relay systems operating automatic control circuits provide supply to the excitation system emergency lighting circuits operating protective relay systems operating automatic control circuits ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a given current transformer, If permissible current ratio error rated primary current is 5% the CT is suitable for as power transformer both measuring and protection measuring purpose protection purpose as power transformer both measuring and protection measuring purpose protection purpose ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Fast excitation system of the generator will _____ Improve the power factor Improve the dynamic stability Improve the reactive power control Improve the voltage control Improve the power factor Improve the dynamic stability Improve the reactive power control Improve the voltage control ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The president of India must have completed the age of 30 Yrs 35 Yrs 50 Yrs 21 Yrs 30 Yrs 35 Yrs 50 Yrs 21 Yrs ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Stray loss is equal to _____ mechanical loss & iron loss frictional loss & copper loss copper loss and iron loss field copper loss & iron loss mechanical loss & iron loss frictional loss & copper loss copper loss and iron loss field copper loss & iron loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Answer in official key is “mechanical loss & iron loss ”.Many times stray loss is also considered as total loss actually accured minus calculatable loss. This means loss that can be calculated is known as stray loss.
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