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A Carnot engine operates with source at 127^ C and sink at 27^ C . If the source supplies 40 ~kJ of heat energy, the work done by the engine is

Options

  1. A30 ~kJ
  2. B10 ~kJ
  3. C4 ~kJ
  4. D1 ~kJ

Correct answer

B. 10 ~kJ

Step-by-step solution

Efficiency, =1- T₂ T₁ =1- (273+27) (273+127) =1- 300 400 =1- 3 4 = 1 4 Also = Work done by engine Heat supplied by source = W 40 ~kJ W=40 =40 1 4 =10 ~kJ

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