GATE ME 2016 Set 2 — Question 55
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Thermodynamics → Laws & Properties → Carnot Cycle & Entropy
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Question
A reversible cycle receives 40 kJ of heat from one heat source at a temperature of 127 C and 37 kJ from another heat source at 97 C. The heat rejected (in kJ) to the heat sink at 47 C is __________
Correct answer
63 to 65
Solution
For a reversible cycle, the Clausius inequality becomes an equality:Let and be the heat received from sources at and , and be the heat rejected to the sink at .Convert temperatures to Kelvin:
Given:
Applying the reversible cycle condition:The heat rejected to the sink is 64 kJ.
Given:
Applying the reversible cycle condition:The heat rejected to the sink is 64 kJ.
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