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Power Systems

Power Systems
A hydroelectric power station is commonly found in

  hilly areas.
 grasslands.
 swamps.
 desert areas.

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Power Systems
Which of the following relationships are not valid for short transmission lines

 A = D = 1
All of these
 B = C = Z
 Is = Ir

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Power Systems
If transmission line parameters A and B are 0.9∠0° and 200∠90° respectively. Find the shunt reactor required to compensate the ferranti effect?

 3000 Ω
 1500 Ω
 2000 Ω
 750 Ω

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

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

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Power Systems
The specific speeds of Kaplan, Francis and Pelton turbines are in

None of these
 neither increasing nor decreasing order.
 the increasing order.
  the decreasing order.

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Power Systems
The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase?

 1
 1.13
 0.93
 0.882

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