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Power Systems

Power Systems
Surge tank is kept very close to the

 turbine
 generator
 spill way
 pen stock

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Power Systems
The Y bus matrix of a 100 bus interconnected system is 90% sparse. Then find the number of non zero elements in the Y bus matrix?

 90
 9000
 10
 1000

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Power Systems
Which of following are the fertile materials

 U238 and Pu239.
 U233 and Pu239.
  U238 and Th232.
 U238 and Th239.

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Power Systems
Which of the following is not a secondary nuclear fuel

  U235.
 Pu239.
 None of above.
 U233.

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Power Systems
Lightning arresters are used to protect electrical equipment against

 over currents due to lightning stroke.
 power frequency of over voltages.
 direct strokes of lightning.
  over voltages due to indirect lightning stroke.

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Power Systems
Taking the density of water to be 1000 kg/m³, how much power would be developed by a hydro electric generator unit, assume 100% efficiency, with 1 m head and 1 m³/s discharge?

 2.90 kW
 9.81 kW
 19.60 kW
 4.45 kW

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