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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
 5
 3

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Power Systems
In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is

  40.5 MVAr.
 45.0 MVAr.
 55.56 MVAr.
 61.73 MVAr.

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Power Systems
For n bus power system size of Y bus matrix is

 (n-1)×(n-2)
 (n-2)×(n-2)
 (n-1)×(n-1)
 n×n

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Power Systems
Steady state stability of a power system is improved by

 decreasing generator inertia
All of these
 using double circuit line instead of single circuit line
 single pole switching

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Power Systems
A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the transmitted voltage?

 100 kV
 36. 36 kV
 18.18 kV
 30.6 Kv

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Power Systems
Rankine cycle efficiency of a steam power plant is of

  45 - 80 %.
  20 - 30 %.
  30 - 45 %.
  60 - 80 %.

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