In cogeneration systems
A)both heating and cooling are produced.
B)both coal and oil are used.
C)use a battery in case the main system fails.
D)two useful forms of energy are produced from the same fuel source.
E)heat from the earth is used to produce electricity.

Question

Quizplus · Accepted Answer

In cogeneration systems, two useful forms of energy (such as heat and electricity) are produced from the same fuel source.

In Cogeneration Systems