1 Energy

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Question 19

The mean power output of a large wind farm is $MW520\text{ MW}$ , which is enough to supply power to $000400\,000$ homes.

a.

Calculate the mean power needed for 1 home. Give your answer in watts.

[3]

b.

Some of the kinetic energy of the wind is wasted as thermal energy in the gears and bearings of the turbines. An engineer applies a lubricant to these moving parts. Explain how applying a lubricant affects the efficiency of the wind turbines.

[3]

1 Energy

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Question 19

The mean power output of a large wind farm is $MW520\text{ MW}$ , which is enough to supply power to $000400\,000$ homes.

a.

Calculate the mean power needed for 1 home. Give your answer in watts.

[3]

b.

Some of the kinetic energy of the wind is wasted as thermal energy in the gears and bearings of the turbines. An engineer applies a lubricant to these moving parts. Explain how applying a lubricant affects the efficiency of the wind turbines.

[3]

1 Energy

Question 19

Markscheme

1 Energy

Question 19

Markscheme

1 Energy

Question 19

1 Energy Questions

1 Energy

Question 19

1 Energy Questions