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Chapter 3 Audio Power Amplifiers MCQs

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1. . An amplifier that operates in the linear region at all times is





2. . A certain class A amplifier delivers 5W to a load with an input signal power of 100 mW. The power gain is





3. . The peak current a class A power amplifier can deliver to a load depends on the





4. . For maximum output, a class A power amplifier must maintain a value of quiescent current that is





5. . A certain class A power amplifier has VCEQ = 12V and ICQ = 1A. The maximum signal power output is





6. . The efficiency of a power amplifier is the ratio of the power delivered to the load to the





7. . The maximum efficiency of a class A power amplifier is





8. . The transistor in a class B amplifier are biased





9. . Crossover distortion is a problem for





10. . A BJT class B push-pull amplifier with no transformer coupling uses





11. . The maximum efficiency of a class B push-pull amplifier is





12. . The output of a certain two-supply class B push-pull amplifier has a VCC of 20 V. If the load resistance is 50 Ω, the value of IC(sat) is





13. . The maximum efficiency of a class AB amplifier is





14. . The power dissipation of class C amplifier is normally





15. . The transistor in a class C amplifier conducts for





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