Power Systems
On which one of the following cycles does a modern steam power plat work

  Rankine cycle.
 Bell - Coleman cycle.
 Carnot cycle.
 Otto cycle.

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Power Systems
A sodium graphite reactors use

 a mixture of sodium and graphite as moderator.
 a mixture of sodium and graphite as coolant.
  sodium as coolant and graphite as moderator.
 sodium as moderator and graphite as coolant.

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