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Question 19N.2.SL.TZ0.6b

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.2.SL.TZ0.6b
Level SL Paper 2 Time zone TZ0
Command term Suggest Question number b Adapted from N/A
b.
[Maximum mark: 1]
19N.2.SL.TZ0.6b

Wind is incident on the blades of a wind turbine. The radius of the blades is 12 m. The following data are available for the air immediately before and after impact with the blades.

(b)

Suggest why the answer in (a) is a maximum.

[1]

Markscheme

because some power is lost due to inefficiencies in the system/transfers to the surroundings ✔

NOTE: Accept power or energy indistinctly

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