Exam-style question
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How can energy dissipation be minimized in mechanical systems?.
- A.By increasing the mass of moving parts.
- B.By using lubricants to reduce friction.
- C.By increasing the speed of the system.
- D.By using more complex machinery.
Model answer
What a good answer should say
- By using lubricants to reduce friction.
Explanation
Why this works
Using lubricants reduces friction between moving parts, which minimizes energy loss due to heat. This is an effective way to reduce energy dissipation in mechanical systems.
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