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GETCO EXAM PAPER (22-07-2015)

GETCO Exam Paper (22-07-2015)
Fast excitation system of the generator will _____

Improve the reactive power control
Improve the power factor
Improve the voltage control
Improve the dynamic stability

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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

1.2
1.8
-0.4
0.4

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GETCO Exam Paper (22-07-2015)
The Y bus matrix is a sparse matrix because …

no of lines are less
Y primitive is a sparse matrix
lines are connected to less no. of buses
bus incidence matrix is a sparse matrix

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GETCO Exam Paper (22-07-2015)
In a power system network, at which bus the shunt is connected that can be known from

reactive power demand
none of these
Y bus of the system
type of bus

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GETCO Exam Paper (22-07-2015)
Steady state stability of a power system is improved by

reducing fault clearing time
using double circuit line instead of single circuit line
by fast switching
decreasing generator inertia

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