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Power Systems

Power Systems
The rating of CB is in terms of

  voltage.
  current.
  volt - ampere.
  VAR.

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Power Systems
Electrostatic precipitators in thermal power plants are used for

 removal of ash from flue gas
All of these
 remove moisture from the cole
 control flow rate

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Power Systems
The generating station suitable to operate as peak load plant is

 Thermal power station.
 Nuclear power station.
  Pumped storage.
 Power station.

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Power Systems
A load centre is at an equidistant from the two thermal generating stations G1 and G2. The fuel cost characteristics of the generating stations are given by F1 = a + bP1 + cP²1 F2 = a + b P2 + 2cP²2 Where P1 and P2 are the generation in MW of G1 and G2, respectively. For most economic generation to meet 300 MW of load, P1 and P2 respectively, are

 175, 125
 200, 100
 100, 200
 150, 150

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Power Systems
Plug setting of a relay can be altered by varying

 none of these.
 no. of ampere-turns.
 adjustable back up stop.
 air gap of magnetic path.

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Power Systems
Fault calculations using computer are usually done by

 Y bus method
 Z bus method
None of these
 either 1 or 2

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