Question detail
What is the primary effect of lubrication in a mechanical system?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Conservation and dissipation of energy
Question
- A. Increases friction between surfaces
- B. Reduces unwanted energy transfers by reducing friction
- C. Increases energy consumption
- D. Decreases the lifespan of components
Answer
Reduces unwanted energy transfers by reducing friction
Explanation
The correct option is "Reduces unwanted energy transfers by reducing friction". Reduces unwanted energy transfers by reducing friction is right because it directly matches Energy transfers in a system: Explain how lubrication reduces unwanted energy transfers by reducing friction.. The other options are less suitable because they change the required Physics relationship, confuse the relevant energy store or use a distractor that does not answer the question.
Common mistake
Misunderstanding Lubrication
Students often think lubrication eliminates friction completely.
Explain that lubrication reduces friction but does not eliminate it entirely.
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