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Power Systems

Power Systems
Find the propagation constant, if impedance is 10Ω and admittance is 10 â„§?

 1
 10
 5
 100

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Power Systems
A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is

 16
 2
 10
 6

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Power Systems
Which of the following plants has the maximum eapital cost

 Hydro-plants.
 Diesel plants.
 Steam plants.
  Nuclear plants.

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Power Systems
A 60 Hz, 320 Km loss less line has sending end voltage 1.0 pu. The receiving end voltage on no-load is

 1.1 pu.
  1.088 pu.
 1.116 pu.
 none of these.

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Power Systems
Which of the following represents the sag(S) of a transmission line?

 S = wl²/4T
 S = wl²/2T
 S = wl²/16T
 S = wl²/8T

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Power Systems
Which of the following transmission line is most practically used in load flow analysis?

 Nominal ∏
 either 1 or 2
 Nominal T
 nether 1 nor 2

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