Question

A power plant burns fuel to convert water to steam. During the process, 83% of the heat produced is transferred. Of the heat carried by the steam, 40% is converted to the mechanical energy of the spinning turbine. Which best describes the overall efficiency of the heat-to-work conversion in the plant

Answer 1

Answer: $33.2\%$

Explanation:

Given

83% heat is transferred and out of this, only 40% is converted to the mechanical energy of spinning turbine.

The overall efficiency is the product of all the efficiency i.e.

$\eta_t=0.83\times 0.4\\\eta_t=0.332\ \text{or}\ 33.2\%$