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Power Systems

Power Systems
Cheapest plant in operation and maintenance is

  nuclear.
  diesel power.
  steam power.
  hydroelectric.

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Power Systems
If the penalty factor of a plant is unity, its incremental transmission loss is

 1
 0
None of these
 -1

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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?

 750 Ω
 1500 Ω
 2000 Ω
 3000 Ω

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Power Systems
Bundled conductors in EHV transmission lines

 increase inductance
 decrease inducatance
 increase capacitance
 decrease capacitance

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Power Systems
The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this?

  LG.
  LL.
  LLLG.
  LLG.

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Power Systems
The maximum efficiency of modern coal fired steam steam raising thermal power plants is restricted to about 0.35( a low value), mainly because of

 high energy loss in boilers
 low alternator efficiency
 high energy loss in condenser
 low steam turbine mechanical efficiency

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