Power Systems
Which of the following will take least time in starting from cold condition to full load operation

 Gas turbine plant.
 Nuclear power plant.
  Hydro electric power plant.
 Thermal power plant.

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Power Systems
Critical mass is

 maximum mass of fissionable material required to sustain a chain reaction.
 a mass of fissionable material required to stop a chain reaction.
 none of these.
  minimum mass of fissionable material required to sustain chain reaction.

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