AP EAMCET Engineering 18 Sep 2020 Shift 2 Paper

Efficiency of heat engine is given as
η=‌

T1−T2

T1

.....(i)
where,
T1= temperature of source and
T2= temperature of sin‌k
From Eq. (i), it is clear that when temperature difference between source and sink(T1−T2) of heat engine increases, then its efficiency η increases.