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Power Systems

Power Systems
India’s largest thermal power station is located at

 Neyveli.
 Kota.
 Chandrapur.
 Sarni.

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Power Systems
A transmission line has self and mutual impedances are 0.8 and 0 pu respectively. Find the positive, negative and zero sequence impedances respectively?

 0.8, 0.8 and 0.8 pu
 0.6, 0.6 and 0.6 pu
 0.6, 0.6 and 1.2 pu
 0.6, 0.8 and 1.2 pu

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Power Systems
Surge impedance loading can be increased by

 increasing of capacitance value
 both 1 and 2
 increasing of voltage level
 increasing of inductance value

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Power Systems
Nuclear fission means

  moderator.
  graphite.
  combination of two light nuclei.
  breaking up of nuclear of heavy atoms into nearly equal parts.

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Power Systems
What will be the ratio of the C.T. on the H.V side of a 3 - φ star / delta 33 / 11 kV transformer if the protecting CT on the LV side has a ratio of 300 : 5 ?

 120 : 6 / √3.
  200 : 5 / √3.
  100 : 5 / √3.
 150 : 4 / √3.

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Power Systems
Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching

  air blast.
  oil.
  vacuum.
  SF6.

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