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Power Systems

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

 6 - 8.
 3 - 6.
  16 - 24.
 12 - 14.

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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.
 0.018 per Km.
 0.09 + j 0.018 per Km.

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Power Systems
Which of the following methods is/are used for reactive or voltage compensation

 generation excitation control
All of these
 shunt capacitor
 series capacitor

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Power Systems
Ideal plant load cfactor is

 less than 1
 0
 greater than 1
 1

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Power Systems
If we increase the spacing between the phase conductors, the value of line inductance

 decrease
None of these
 increase
 remains unaffected

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Power Systems
In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%.

 52.84 kV
 20 kV
 83.76 kV
 48.36 kV

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