Question detail
How can efficiency be improved in a 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. By increasing the total energy input.
- B. By reducing wasted energy transfers.
- C. By increasing the output energy.
- D. By decreasing the useful energy output.
Answer
By reducing wasted energy transfers.
Explanation
The correct option is "By reducing wasted energy transfers.". By reducing wasted energy transfers. is right because it directly matches Efficiency: Express efficiency as a decimal.. 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
Confusing Efficiency Representation
Students often express efficiency as a fraction instead of a decimal.
To express efficiency as a decimal, divide the useful energy output by the total energy input and ensure the result is in decimal form.
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