GETCO Exam Paper (22-07-2015) 100% string efficiency means Zero potential across each disc One of the insulator discs shorted Equal potential across each disc None uniform potential distribution across each disc Zero potential across each disc One of the insulator discs shorted Equal potential across each disc None uniform potential distribution across each disc ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Two heaters rated at 500 W, 250 V each are conneted in series across a 250 V, 50 Hz mains. The total power drawn from the supply would be _____ watt. 250 125 500 1000 250 125 500 1000 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The power factor of the arc in circuit breaker is always zero always leading always unity always lagging always zero always leading always unity always lagging ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Critical clearing time of a fault in a power system is related to Short circuit limit Transient stability limit Reactive power limit Steady state limit Short circuit limit Transient stability limit Reactive power limit Steady state limit ANSWER DOWNLOAD EXAMIANS APP
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 lines are connected to less no. of buses bus incidence matrix is a sparse matrix Y primitive is a sparse matrix no of lines are less lines are connected to less no. of buses bus incidence matrix is a sparse matrix ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) What is the surge impedance loading of 400 kV line with surge impedance given as 160 Ω 1000 kW 250 MW 1000 MW 400 MW 1000 kW 250 MW 1000 MW 400 MW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP SIL = (kV)²/Z₀
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