GETCO Exam Paper (22-07-2015) For a given transformer volte/turn for primary and secondary winding is depends on transformer design depends on load same different depends on transformer design depends on load same different ANSWER EXPLANATION DOWNLOAD EXAMIANS APP emf = 4.44*f*φ*Temf/T = 4.44*f*φ
GETCO Exam Paper (22-07-2015) The Y bus matrix is a sparse matrix because … Y primitive is a sparse matrix no of lines are less bus incidence matrix is a sparse matrix lines are connected to less no. of buses Y primitive is a sparse matrix no of lines are less bus incidence matrix is a sparse matrix lines are connected to less no. of buses ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Switching surges are short duration transient voltage power frequency voltage high voltage Acs high votage DCs short duration transient voltage power frequency voltage high voltage Acs high votage DCs ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Which of the following breaking method save energy? plugging dynamic breaking resistor breaking regenerative breaking plugging dynamic breaking resistor breaking regenerative 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) Steady state stability of a power system is improved by by fast switching reducing fault clearing time using double circuit line instead of single circuit line decreasing generator inertia by fast switching reducing fault clearing time using double circuit line instead of single circuit line decreasing generator inertia ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In case of a balanced three phase sinusoidal AC supply, because of the phase difference rotating magnetic field is produced neutral current is high if load is not balanced all are correct neutral wire is not required, if load is balanced rotating magnetic field is produced neutral current is high if load is not balanced all are correct neutral wire is not required, if load is balanced ANSWER DOWNLOAD EXAMIANS APP
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