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State two benefits of renewable energy - Leaving Cert Engineering - Question c, d, e - 2022

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Question c, d, e

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State two benefits of renewable energy. Explain the function of the idler gear B in the gear train shown. Give one reason why it is important to keep engine parts ... show full transcript

Worked Solution & Example Answer:State two benefits of renewable energy - Leaving Cert Engineering - Question c, d, e - 2022

Step 1

State two benefits of renewable energy.

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Answer

  1. Sustainability: Renewable energy sources such as solar, wind, and hydropower are sustainable as they can be replenished naturally and are not subject to depletion.

  2. Environmentally Friendly: These energy sources produce little to no greenhouse gas emissions during operation, significantly reducing the environmental impact compared to fossil fuels.

Step 2

Explain the function of the idler gear B in the gear train shown.

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Answer

The idler gear B serves as a connector between gear A and gear C. Its primary function is to allow gear A to turn gear C without changing the direction of rotation. When gear A turns, the idler gear B meshes with it, causing it to rotate in the opposite direction, which in turn rotates gear C in the same direction as gear A.

Step 3

Give one reason why it is important to keep engine parts lubricated.

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Answer

Lubrication is crucial for reducing friction between engine parts. This minimizes wear and tear, ensuring smoother operation, increasing efficiency, and extending the lifespan of the engine components.

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