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Two wind farms supply electrical energy to consumers in differ

Question

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Solving time: 3 mins

Two wind farms supply electrical energy to consumers in different ways.
Wind farm 1 supplies energy directly to consumers and for every $1000 J$ of energy extracted from the wind, $360 J$ is transferred to consumers as electrical energy.
Wind farm 2 stores electrical energy in batteries and then supplies energy from the batteries to the consumer. For every $1000 J$ of energy extracted from the wind, $270 J$ is transferred to consumers as electrical energy.
Which statement about the two wind farms is correct?

Uploaded: 2022-09-24T02:54:57.000Z
Duration: 15 min

Wind farm 1 is less reliable and less efficient than wind farm

2.

Wind farm 1 is less reliable but more efficient than wind farm

2.

Wind farm 1 is more reliable but less efficient than wind farm

2.

Wind farm 1 is more reliable and more efficient than wind farm

2.

Views: 5,522 students

Updated on: Sep 27, 2022

Text solutionVerified

Correct answer: Option (B)
Explanation for correct answer:
Efficiency,

η = \frac{o u tp u t p o w er}{in p u t p o w er}

For wind mill 1,
Efficiency,

η_{1} = \frac{360}{1000} = 0.36 J

For wind mill 2,
Efficiency,

η_{2} = \frac{270}{1000} = 0.27 J

Wind farm

1

is less reliable but more efficient than wind farm

2.

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Chloe Discussed

Two wind farms supply electrical energy to consumers in different ways.
Wind farm 1 supplies energy directly to consumers and for every

1000 J

of energy extracted from the wind,

360 J

is transferred to consumers as electrical energy.
Wind farm 2 stores electrical energy in batteries and then supplies energy from the batteries to the consumer. For every

1000 J

of energy extracted from the wind,

270 J

is transferred to consumers as electrical energy.
Which statement about the two wind farms is correct?

11 mins ago

Discuss this question LIVE

11 mins ago

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Question Text	Two wind farms supply electrical energy to consumers in different ways. Wind farm 1 supplies energy directly to consumers and for every $1000 J$ of energy extracted from the wind, $360 J$ is transferred to consumers as electrical energy. Wind farm 2 stores electrical energy in batteries and then supplies energy from the batteries to the consumer. For every $1000 J$ of energy extracted from the wind, $270 J$ is transferred to consumers as electrical energy. Which statement about the two wind farms is correct?
Updated On	Sep 27, 2022
Topic	Energy, work and power
Subject	Physics
Class	Grade 9
Answer Type	Text solution:1 Video solution: 2
Upvotes	357
Avg. Video Duration	13 min

Text solutionVerified

Video solutions (2)

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