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Power Systems

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

  16 - 24.
 3 - 6.
 12 - 14.
 6 - 8.

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Power Systems
The charging reactance of 50 km transmission line is 1500 Ω. What is the charging reactance for 100 km length of line?

 3000 Ω
 1500 Ω
 1000 Ω
 750 Ω

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Power Systems
Communications lines are treated as

 short transmission lines
 any of the above
 medium transmission lines
 long transmission lines

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Power Systems
Among the following which is not non conventional energy

  Geothermal.
  Wind.
  Tidal.
  Nuclear.

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

  Kaplan.
 Pelton.
 Francis.
 Impeller.

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Power Systems
The sequence components of the fault current are as follows: IR1 = j1.5 pu, IR2 = -j0.5 pu, IR0 = -j1. The type of fault is

 LL
 LLG
 LG
 LLL

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