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Power Systems

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

  16 - 24.
 3 - 6.
 12 - 14.
 6 - 8.

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Power Systems
Transmission line parameters of the short transmission line are

 1,Z,Y,1
 1,Z,0,1
 1,0,Y,1
 Z,0,Y,1

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Power Systems
The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs

 shunt resistance at receiving end
 shunt capacitor at receiving end
 shunt reactor at receiving end
All of these

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Power Systems
The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are

 100, 0.4
 4, 0.4
 100, 10
 4, 10

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Power Systems
The specific speed of water turbine is the speed at which the turbine develops

 maximum horse power.
 unit horse power at all heads.
  unit horse power at unit head.
 a minimum horse power.

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Power Systems
In a nuclear reactor, chain reactor is controlled by introducing

 iron rods.
 brass rods.
  cadmium rods.
 graphite rods.

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