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Power Systems

Power Systems
Which of the following materials is/are used as moderators?

 graphite
 heavy water
All of these
 beryllium

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Power Systems
Which of the following is used in thermal plants

 Rankine cycle
All of these
 Otto cycle
 Joule cycle

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Power Systems
Deaerative heating is done to

 heat the steam.
 heat the feed water.
  remove dissolved gases in water.
 remove dissolved.

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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„§?

 160 Ω
 200 Ω
 400 Ω
 320 Ω

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Power Systems
Efficiency of thermal power plant can be taken as

  efficiency of thermal cycle.
  generator efficiency.
  product of efficiencies of all stages.
  turbine efficiency.

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Power Systems
A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications

 Pulversing unit.
 Condenser.
 Ash handling unit.
 Cooling tower.

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