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Power Systems

Power Systems
Rankine cycle efficiency of a steam power plant is of

  45 - 80 %.
  60 - 80 %.
  20 - 30 %.
  30 - 45 %.

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Power Systems
The function of draft tube is reaction turbine is to

 increase flow rate of water.
  convert kinetic energy of water.
 reduce water hammer.
 all of above.

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Power Systems
Which following statement are not true for line parameters R, L, G and C of transmission line

 LC = μ ε and RG = σ ε.
 All of above.
 Both R and G depend on the conductivity of conductor forming the line.
 G = 1/R where G is conductance of line.

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Power Systems
Radio interference occur in telecommunication line due to

 both 1 and 2
 nether 1 nor 2
 electro static induction
 electro magnetic induction

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Power Systems
An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 500/5. The plug setting multiplier for a fault current of 5 kA is

 6
 8
 5
 2

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

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

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