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Power Systems - Interview Questions and Answers

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86. Shunt conapenBation in an EHV line is "Bed
A. improve stability
B. reduce fault level
C. improve the voltage profile
D. subsitute for synchronous phase modifier
Explanation:
87. Gauss-Seidel iterative method can be used for solving a set of
A. linear differential equations only
B. linear algebraic equation only
C. both linear and nonlinear algebraic equations
D. both linear and nonlinear differential equations
Explanation:
88. A star-conneted 440 V, 50 Hz alternator has per phase synchronous reactance of 10 n. It supplies a bal anced capacitive load current of 20 A, as shown in per phase equivalent circuit of the given figure. It is desirable to have zero voltage regulation. The load power factor should be
A. 0.82
B. 0.47
C. 0.39
D. 0.92
Explanation:
89. A generating station has a maximum demand of 50 Mw, a load factor of 60%, a plant capacity factor of 45% and if the plant while running as per schedule, were fully loaded. The daily energy produced will be
A. 400 MW
B. 720 MW
C. 500 MW
D. 600 MW
Explanation:
90. The voltage of CI generator and an infinite bus are given as O.92LIO 0 and 1.0L'O 0 respectively. The active power will flow from
A. generator to infinite bus
B. infinite bus to generator
C. the data is insufficient to judge
D. none of the above
Explanation: