IB Physics HL A.3.3 Sankey Diagrams Question Bank
Practise interpreting HL Sankey diagrams by comparing useful output, transmission losses and overall efficiency percentages.
- Syllabus
- First assessment 2025
- Course
- Physics HL
- Level
- HL
Exam points
- Interpret Sankey percentages to identify useful energy output, transmission losses and overall efficiency.
A.3.3—Sankey diagrams question 1
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.
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