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Power Systems

Power Systems
Surge impedance loading (SIL) is represented by

 Vl²*√(C/L)
 Vl²/Zs
 both 1 and 2
 Vph²/Zs

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Power Systems
Pumped storage plant is a

 base load plant
 both 1 and 2
None of these
 peak load plant

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Power Systems
At slack bus, which one of the following combinations of variables is not specified?

 V and δ
 P and V
 Q and V
 P and Q

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Power Systems
A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line?

 (2 + j4 ) pu
 (4 + j8 ) pu
 (0.5 + j1 ) pu
 (1 + j2 ) pu

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Power Systems
Example of base load stations are

  gas turbine.
  thermal.
  hydro.
  both A and B.

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Power Systems
Critical visual voltage is the voltage at which

 corona is just initiated
 corona is visible with blue or violet colour
None of these
 both 1 and 2

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