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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?

 6
 4
 5
 3

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Power Systems
In Francis turbine runner, the number blades is usually of the order of

 6 - 8.
  16 - 24.
 3 - 6.
 12 - 14.

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Power Systems
The thermal efficiency of BWR is

None of these
 less than that of PWR.
 greater than that of PWR.
  equal to that of PWR.

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Power Systems
The shape of the disc of an induction disc relay is

  none of these.
  circular.
  elliptical.
  spiral.

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Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

 one
 two
 three
 six

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Power Systems
A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu?

 0.2 pu
 2.4 pu
 3.975 pu
 1.375 pu

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