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Power Systems

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

 12 - 14.
 3 - 6.
  16 - 24.
 6 - 8.

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Power Systems
Surge impedance loading can be increased by

 increasing of voltage level
 increasing of inductance value
 increasing of capacitance value
 both 1 and 2

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Power Systems
Mho relay is usually employed for protection of

 medium transmission lines only
 any line
 long transmission lines only
 short transmission lines only

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Power Systems
Which of the following quantities are to be calculated for generator bus?

 Q and δ
 P and V
 δ and V
 P and Q

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Power Systems
Surge impedance loading of a transmission line can be increased by

 both 1 and 3
 addition of lumped inductance in parallel
 increasing its voltage level
 addition of lumped capacitance in series

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Power Systems
Transmission lines are transposed to reduce

 ferranti effect
 interference with neighbouring communication lines
 skin effect
 proximity effect

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