1. The output stage of a multistage amplifier usually employs ___________ A. Push-pull amplifier B. Preamplifier C. Class A power amplifier D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
2. ___________ coupling is generally employed in power amplifiers A. Transformer B. RC C. direct D. Impedance Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
3. The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor? A. 20 W B. 40 W C. 10 W D. 80 W Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
4. The maximum efficiency of resistance loaded class A power amplifier is A. 5% B. 50% C. 30% D. 25% Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
5. The disadvantage of impedance matching is that it ___________ A. Gives distorted output B. Gives low power output C. Requires a transformer D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
6. In class A operation, the operating point is generally located ___________ of the d.c. load line. A. At cut off point B. At the middle C. At saturation point D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
7. The output transformer used in a power amplifier is a ___________ transformer A. 1:1 ratio B. Step-up C. Step-down D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
8. Transformer coupling can be used in ___________ amplifiers A. Either power or voltage B. Only power C. Only voltage D. None of the above Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
9. A 2-transistor class B power amplifier is commonly called ___________ amplifier A. Dual B. Push-pull C. Symmetrical D. Differential Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
10. A class A power amplifier is sometimes called ___________ amplifier A. Symmetrical B. Single-ended C. Reciprocating D. Differential Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
