AP EAMCET Engineering 22 Sep 2020 Shift 2 Paper

Efficiency of Carnot engine, η=‌

1

3

But n=1−‌

T2

T1

where, T1= and temperature of force
T2= temperature of sink
When temperature of sink is reduced by 40%, then its new temperature, T2′=T2−40% of T2
=T2−0.4T2
⇒ T2′=0.6T2
Now efficiency of Carnot's engine