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Power Systems

Power Systems
Making current is a------------ value?

 any of the above
 peak value
 RMS
 average

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Power Systems
Percentage of carbon is highest in

  coal gas.
  lignite coal.
  anthracite coal.
  bituminous coal.

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Power Systems
Which of the following plants has the maximum eapital cost

  Nuclear plants.
 Hydro-plants.
 Diesel plants.
 Steam plants.

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Power Systems
A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time?

 0.92
 0.56
 -0.92
 -0.56

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Power Systems
If we increase the spacing between the phase conductors, the line capacitance

 increases
 decreases
None of these
 remains unaffected

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Power Systems
A 4 bus power system consists of 4 transmission lines, then find the sparsity of Y bus matrix?

 0.25
 0.4
 0.5
 0.75

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