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Power Systems

Power Systems
If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines?

 4
 6
 3
 5

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Power Systems
A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero?

 28.28 kV
 29.28 kV
 31.28 kV
 30.28 kV

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Power Systems
Zero sequence currents can flow from a line into a transformer bank if the windings are in

 delta / delta.
 star / grounded star.
 delta / star.
  ground star / delta.

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Power Systems
A thermal generating station has an installed capacity of 15 MW and supplies a daily load of 10 MW for 12 hours and 5 MW for remaining 12 hours. If the load factor is 0.8. Find the reserve capacity of the station?

 5 MW
 10 MW
 9 MW
 18 MW

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Power Systems
Transmission line parameters of the short transmission line are

 1,Z,0,1
 1,Z,Y,1
 1,0,Y,1
 Z,0,Y,1

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Power Systems
Which of the following is/are advantages of N-R method?

 Applicable for large power system network
 both 1 and 2
 Number of iterations are less
 Time taken for each iteration is less

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