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GETCO Exam Paper (22-07-2015)
The Y bus matrix is a sparse matrix because …
lines are connected to less no. of buses
no of lines are less
bus incidence matrix is a sparse matrix
Y primitive is a sparse matrix
lines are connected to less no. of buses
no of lines are less
bus incidence matrix is a sparse matrix
Y primitive is a sparse matrix
Answer
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Related Question
GETCO Exam Paper (22-07-2015)
The Z matrix of 2 port network is given by [0.9 0.2 : 0.2 0.6]. The element Y22 of the corresponding Y matrix of the same network is given by
-0.4
1.8
0.4
1.2
-0.4
1.8
0.4
1.2
Answer
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GETCO Exam Paper (22-07-2015)
Which of the following is a reason to decouple AVR and LFC loops when there is a shortage of reactive power?
Change in voltage magnitude marginally affects real power
deference of error is the main reason
AVR loop response is slower than LFC loop
angle of the voltage is not considered
Change in voltage magnitude marginally affects real power
deference of error is the main reason
AVR loop response is slower than LFC loop
angle of the voltage is not considered
Answer
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GETCO Exam Paper (22-07-2015)
In load flow analysis, the load at the bus is represented as
a voltag dependent impedance at the bus
a constant impedance connected at the bus
none of these
a constant current drawn from the bus
a voltag dependent impedance at the bus
a constant impedance connected at the bus
none of these
a constant current drawn from the bus
Answer
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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
200
150
300
100
200
150
300
100
Answer
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GETCO Exam Paper (22-07-2015)
The steady state stability of the power systems is most effected by
stability of generator
power factor of the load
voltage at generator bus
transmission line reactance
stability of generator
power factor of the load
voltage at generator bus
transmission line reactance
Answer
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