What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?
Correct answer: C. 40%
- A. 20%
- B. 80%
- C. 40%
- D. 50%
Explanation
Collector efficiency is the a.c. output power divided by the d.c. input power; here η = 2/5 × 100 = 40%. The zero-signal dissipation is used as the d.c. input power for this calculation.
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