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Power Systems

Power Systems
A hydroelectric power station is commonly found in

 grasslands.
  hilly areas.
 desert areas.
 swamps.

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Power Systems
A transmission line has self and mutual impedances of 0.8 pu and 0.2 pu. Find the positive, negative and zero sequence impedances respectively?

 0.6, 0.8 and 1.2 pu
 0.8, 0.8 and 1.2 pu
 0.6, 0.6 and 1.2 pu
 0.8, 0.6 and 1.2 pu

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Power Systems
A diesel power station has fuel consumption of 0.28 Kg per kWh. The calorific value of fuel is being 10000 KCal / kg. Determine the overall efficiency

 40 %.
  30.26 %.
  30.7 %.
 40.85 %.

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Power Systems
A generating station which has a high investment cost and low operating cost is usually operated as a

 None of above.
 Base load station.
 Minimum load station.
 Peak load station.

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Power Systems
Bundled conductors are used for EHV transmission lines primarily for reducing the

 surge impedance of the line
 copper loss
 voltage drop across the line
 corona loss

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Power Systems
If the inertia constant H = 8 MJ/MVA for a 50 MVA generator, the stored energy is

 8 MJ
 50 MJ
 400 MJ
 200 MJ

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