| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.HL.TZ2.22 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Question number | 22 | Adapted from | N/A |
Question
The Sankey diagram shows the energy input from fuel that is eventually converted to useful domestic energy in the form of light in a filament lamp.
What is true for this Sankey diagram?
A. The overall efficiency of the process is 10%.
B. Generation and transmission losses account for 55% of the energy input.
C. Useful energy accounts for half of the transmission losses.
D. The energy loss in the power station equals the energy that leaves it.
Markscheme
A
Examiners report
[N/A]
Syllabus sections
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