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Powering Earth

Powering Earth

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Question 1

A wind turbine has blades of length 45 m. It is installed in a region with an average wind speed of 12 m s-1 and an air density of 1.2 kg m-3. If the turbine and generator system has an overall efficiency of 35%, what is the electrical power output of the turbine?

A

0.19 MW0.19\text{ MW}0.19 MW

B

2.31 MW2.31\text{ MW}2.31 MW

C

4.62 MW4.62\text{ MW}4.62 MW

D

6.60 MW6.60\text{ MW}6.60 MW

Markscheme

Powering Earth Questions

  1. GCSE
  2. /Physics
  3. /Powering Earth

39 exam-style questions on OCR GCSE Physics Powering Earth. Each one has a worked solution and a mark scheme showing where the marks go.

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