In a CB amplifier the maximum efficiency could be____________?
Correct answer: D. 25%
- A. 99%
- B. 85%
- C. 50%
- D. 25%
Explanation
For a class-A common-base amplifier with a resistive collector load, the maximum theoretical efficiency is 25%. The 50% figure applies to a transformer-coupled class-A output stage, not the usual resistive-load case.
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