GETCO Exam Paper (22-07-2015) The insulation strength of an EHV transmission line is mainly governed by Harmonics Load power factor Corona Switching over voltages Harmonics Load power factor Corona Switching over voltages 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 2\3 5\6 6\7 7\8 2\3 5\6 6\7 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) Kathakali' is a folk dance prevalent in which state? Orissa Karnataka Kerala Andhra Pradesh Orissa Karnataka Kerala Andhra Pradesh ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following breaking method save energy? resistor breaking plugging regenerative breaking dynamic breaking resistor breaking plugging regenerative breaking dynamic breaking ANSWER EXPLANATION DOWNLOAD EXAMIANS APP three types of electric breaking:Regenerative breaking( leads to economic and energy consevation)pugging (more efficient method of breaking)rheostatic breaking
GETCO Exam Paper (22-07-2015) The fault occurring in transmission actually are mostly L-G L-L-L L-L L-L-G L-G L-L-L L-L L-L-G ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Shunt compensation in EHV line is resorted to Improve voltage profile Reduce the fault level Increase line impedance Improve the stability Improve voltage profile Reduce the fault level Increase line impedance Improve the stability ANSWER DOWNLOAD EXAMIANS APP
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