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Power Systems

Power Systems
The rating of fuse wire is always expressed in

  kWh.
  ampere-volts.
  amperes.
  ampere-hours.

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Power Systems
Surge impedance loading of a 3-phase, 400 kV transmission line is 400 Ω. The surge impedance loading is

 400 MW
 800 MW
 1600 MW
 200 MW

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Power Systems
Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 mâ„§?

 320 Ω
 400 Ω
 200 Ω
 160 Ω

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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
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?

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

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Power Systems
The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

 A resistance of j300 ohm.
 A resistance of 100 ohm.
 A resistance of 100/3 ohm.
 A resistance of j100/3 ohm.

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