Question

A Carnot engine works between constant temps T₁ and T₂ of source and sink resp. For efficiency to be greatest

• A. Both T₁ and T₂ should be low
• B. Both T₁ and T₂ should be high
• C. T₁ should be high and T₂ should be low
• D. T₁ should be low and T₂ should be high

Answer 1

Answer: (C)

T₁ should be high and T₂ should be low

Answer 2

Q h = 1 – $\frac{T_{2}}{T_{1}}$ T₁ ­, T₂ ­ for [100%] or greatest