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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
 3
 5
 6

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Power Systems
In which power plant, the thermal efficiency is quite low

  Steam power plant.
  Nuclear power plant.
  Hydro power plant.
  Diesel power plant.

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Power Systems
The insulation of modern EHV is designed based on

  switching voltage.
 lightning voltage.
 RI.
 corona.

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Power Systems
Lightning arresters are made up of which material?

 silver
 silicon oxide
 any of the above
 copper

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Power Systems
Bundled conductors in EHV transmission lines

 decrease capacitance
 decrease inducatance
 increase inductance
 increase capacitance

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Power Systems
The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be

 8.936 pu
 9.936 pu
 10.936 pu
 7.936 pu

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