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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
 V and δ
 P and Q

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Power Systems
Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses?

 105.2
 95.5
 85.5
 102.5

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Power Systems
Two identical synchronous machines having same inertia constant are connected in parallel and swinging together. The effective inertia constant is 4 MJ/MVA. Then each machine has inertia constant of

 2 MJ/MVA
 16 MJ/MVA
 8 MJ/MVA
 4 MJ/MVA

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Power Systems
In hydro power stations what is an enlarged body of water just above the intake and used as a regulating reservoir called

 Reservoir.
 Spillways.
  Fore bay.
 Penstock.

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

  3 - 6.
 1 - 2.
 12 - 16.
  16 - 24.

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Power Systems
Which of the following will take least time in starting from cold condition to full load operation

 Gas turbine plant.
  Hydro electric power plant.
 Thermal power plant.
 Nuclear power plant.

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