GETCO Exam Paper (22-07-2015) The Y bus matrix is a sparse matrix because … 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 Y primitive is a sparse matrix no of lines are less lines are connected to less no. of buses ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Penalty factor in power system economical operation is measure of fuel cost generation cost all are correct Line loss fuel cost generation cost all are correct Line loss ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) An over-current relay of current rating 5 A and setting 150% is connected to a 200/5 A CT. Then the relay to pickup, the line current required is 150 200 300 100 150 200 300 100 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The rating of given on the name plate of a transformer indicates the: Apparent power which it can supply True power whichh it draws from the supply mains Apparent power which it draws from the supply mains True power which it can supply Apparent power which it can supply True power whichh it draws from the supply mains Apparent power which it draws from the supply mains True power which it can supply ANSWER EXPLANATION DOWNLOAD EXAMIANS APP The rating of given on the name plate of a transformer indicates the:Apparent power which it can supply S=V( supplied voltage)*I (load current)active power = v* i*cosφreactive power = v* i*sinφ
GETCO Exam Paper (22-07-2015) In the standard B-H curve X axis and Y axis intercepts respctively represents Hysteresis loss and Flux residual magnetism and coercive force coercive force and residual magnetism Flux and MMF Hysteresis loss and Flux residual magnetism and coercive force coercive force and residual magnetism Flux and MMF ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 3 + 2(1.41) 5 4.12 7 3 + 2(1.41) 5 4.12 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP if voltage is given by,v(t) = V₀ + V₁ cos(3t) + V₂ cos(5t)+ …RMS value is given by,√( V₀² + (V₁/√2)² + (V₂/√2)² + …)
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