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To increase work capacity of energy transferred by heat transfer from high temperature to low temperature 

(a) lower temperature should be lowered keeping temperature difference same 

(b) higher temperature should be increased keeping temperature difference same 

(c) temperature difference should be increased 

(d) temperature difference should be decreased.

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2 Answers

+1 vote
by (44.2k points)

(d) temperature difference should be decreased.

+1 vote
by (22 points)
is correct option 

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