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Power Systems - Interview Questions and Answers

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56. A generating st ation has a maximum, demand of 20 mW, load factor of 60%, a plant capacity factor of 50% and a plant Use factor of 72%. What is the reserve capacity of the plant, if the plant, while running as per schedule, were fully loaded?
A. 10 MW
B. 15 MW
C. 2 MW
D. 5 MW
Explanation:
57. The X:R ratio of 220 kV line as compared to 400 kV line is
A. greater
B. smaller
C. equal
D. it could be anything
Explanation:
58. Whenever the conductors are dead-ended of there is a change in the direction of transmission line, the insulator. used are of the
A. pin type
B. suspension type
C. strain type
D. shackle type
Explanation:
59. The main criterion for selection of the size of a distribution for a radial distribution system is
A. voltage drop
B. corona loss
C. temperature rise
D. capital cost
Explanation:
60. The effect of series capacitance compensation is
A. to decrease the virtual surge impedance
B. to decrease the effective length of the line
C. to increase virtual surge impedance loading
D. all of the above
Explanation:
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