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Power Systems

Power Systems
Example of base load stations are

  gas turbine.
  thermal.
  both A and B.
  hydro.

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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?

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

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Power Systems
Stability of a transmission line can be increased by

 series capacitor
 shunt capacitor
 shunt reactor
 both 1 and 2

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Power Systems
If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs.

 20.
 7.
 3.
  5.

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Power Systems
For distortion less line which of following relation are true

 None of above.
 R = O, G = O.
 R/L = G/C.
 R/L = C/G.

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Power Systems
In kaplan runner, the number of blades is generally of the order of

  3 - 6.
 12 - 16.
  16 - 24.
 1 - 2.

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