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Power Systems

Power Systems
More efficient plants are used as

None of these
 base load plant
 both 1 and 2
 peak load plant

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Power Systems
If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line

 None of them.
 0.01 + j 0.02 per Km.
 0.09 + j 0.018 per Km.
 0.018 per Km.

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Power Systems
The pickup value of relay is 6.5 Amp and fault current in relay coil is 39 Amp. Its plug setting multiplier is

 7 A.
 10 A.
 8 A.
  6 A.

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Power Systems
The radiation shield for a nuclear power reactor for biological safety is provided by having the reactor

  encased by thick concrete wall.
 immersed in water pool.
 encased thick metal wall.
 isolated from outside word with strong magnetic field.

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Power Systems
The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to

 12.5 electrical degrees/s²
 225 electrical degrees/s²
 125 electrical degrees/s²
 22.5 electrical degrees/s²

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Power Systems
In a steam power plant, the feed water coming to the economizer is heated plant the feed water coming to the economizer is heated using

 LP steam.
  flue gas.
 direct heat in the furnace.
 HP steam.

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