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Question 18M.1.HL.TZ2.22

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.HL.TZ2.22
Level HL Paper 1 Time zone TZ2
Command term Question number 22 Adapted from N/A
22.
[Maximum mark: 1]
18M.1.HL.TZ2.22

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.

M18/4/PHYSI/HPM/ENG/TZ2/22

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.

[1]

Markscheme

A

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