If e is the electricity fraction of the total energy output, m is the electric plant efficiency and n is the steam generator efficiency; the heat added per unit total energy output is given by?
A)(1 / m) + ((1 - e) / n).
B)(1 / n) + ((1 - e) / m).
C)(1 / m) + ((1 + e) / n)
D)(1 / n) + ((1 - e) / m)

Question

Quizplus · Accepted Answer

The heat added per unit total energy output is given by the sum of the heat added to the electric plant and the heat added to the steam generator. The heat added to the electric plant is given by 1 / m, where m is the electric plant efficiency. The heat added to the steam generator is given by (1 - e) / n, where e is the electricity fraction of the total energy output and n is the steam generator efficiency.

If E Is the Electricity Fraction of the Total Energy