AP EAMCET Engineering 2018 Apr 22 Shift 2 Paper

The below figure represent the required diagram,Given information:
Volume at C is equal to V and the volume at D is equal to 32V.
Write the expression of adiabatic expansion.
TCVCγ−1=TDVDγ−1

TC

TD

=(

VD

VC

)γ−1

TC

TD

=(

32V

V

)γ−1

TC

TD

=32

2

5

TC

TD

=4
So, the efficiency of Carnot cycle is given by,
η=1−

TD

TC

=1−

1

4

=0.75