First slide

Heat engine

Question

A Carnot engine works first between 200° C and 0° C and then between 0° C and – 200° C. The ratio of its efficiency in these two cases is

Easy

A

1.0
B

0.721
C

0.577
D

0.34

Solution

$\frac{η_{1}}{η_{2}} = \frac{(1 - \frac{T_{2}}{T_{1}})}{(1 - \frac{T_{2}^{1}}{T_{1}^{1}})} = \frac{(1 - \frac{273}{473})}{(1 - \frac{73}{273})} = 0 .577$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App