Question

A heat is working between 27${}^{0}C$ and 327${}^{0}C$ . Its efficient cannot be

• A. 60%
• B. 40%
• C. 35%
• D. All of these

Answer 1

Answer: (A)

60%

Given :A heat is working between ${27}^{o}C$ and ${327}^{o}C$0C . Its efficient cannot be

Solution :

We need temperature in standard unit Kelvin so

$T_L=273+27=300K$

$T_H=273+327=600K$

Efficiency = $1-\frac{T_L}{T_H}$

Efficiency = $1-\frac{300}{600}$ = 0.5 0r 50%

hence efficiency cannot be more than 50%

The Correct Opt= A