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Power Systems

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

 6 - 8.
 12 - 14.
  16 - 24.
 3 - 6.

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Power Systems
The annual depreciation of hydro power plant is about

  0.5 - 1.5 %.
 20 - 25 %.
 10 - 15 %.
 15 - 20 %.

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Power Systems
The per unit impedance Z(pu) is given by

 ZΩ* (MVA)b*100/(KV)²b
 ZΩ* (kVA)b/(KV)²b
 ZΩ* (MVA)b/((KV)²b *100)
 ZΩ* (MVA)b/(KV)²b

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Power Systems
Which power plant cannot have single unit of 100 MW capacity

 Hydro electric power plant.
 Steam power plant.
 Nuclear power plant.
  Diesel engine plant.

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Power Systems
For variable heads of near about but less than 30 meters, which type of turbine is used in hydro power station?

 Francis
None of these
 Kaplan
 Pelton

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Power Systems
A 3 layer, total diameter of an ACSR conductor is 5 cm. Find the diameter of each strand?

 15 cm
 1 cm
 5 cm
 1.5 cm

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