Question

question 3 (1 point)
the percentage of input energy that has been transformed into useful energy is
○ energy intensity
○ useful output energy
○ energy efficiency
○ energy input
question 4 (1 point)
the desired energy form resulting from a process involving a transformation of
energy
○ input energy
○ energy intensity
○ useful output energy
○ energy efficiency

Explanation:

Question 3: Energy efficiency is defined as the percentage of input energy converted to useful energy.
Question 4: Useful output energy is the desired energy form from an energy transformation process.

Answer:

Question 3: C. energy efficiency
Question 4: C. useful output energy