Thermodynamics - Result Question 43

45. A Carnot engine whose sink is at 300K has an efficiency of 40. By how much should the temperature of source be increased so as to increase, its efficiency by 50 of original efficiency?

[2006]

(a) 325K

(b) 250K

(c) 380K

(d) 275K

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Answer:

Correct Answer: 45. (b)

Solution:

  1. (b) We know that efficiency of Carnot Engine η=T1T2T1 where, T1 is temp. of source and T2 is temp. of sink

0.40=T1300T1T1300=0.40T1

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