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Power Systems

Power Systems
For load flow studies, What are the quantities specified at load bus are

 P and V
 δ and Q
 P and Q
 V and δ

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Power Systems
Example of base load stations are

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

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Power Systems
Electrostatic precipitators in thermal power plants are used for

All of these
 control flow rate
 remove moisture from the cole
 removal of ash from flue gas

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes is

 Francis.
 Pelton.
 Impeller.
  Kaplan.

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Power Systems
One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is

 135.3 MWhr
 120 MWhr
 140 MWhr
 130.2 MWhr

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

 6 - 8.
  16 - 24.
 12 - 14.
 3 - 6.

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