11. If a transistor is operated in such a way that output current flows for 60° of the input signal, then it is ___________ operation A. Class A B. Class B C. Class C 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
12. The push-pull circuit must use ___________ operation A. Class A B. Class C C. Class B D. Class AB 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
13. The most costly coupling is ___________ coupling A. RC B. Direct C. Impedance D. Transformer 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
14. When no signal is applied, the approximate collector efficiency of class A power amplifier is A. 10% B. 0% C. 25% D. 50% 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
15. If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least ___________ A. 5 W B. 33 W C. 75 W D. 1 W 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
16. The maximum collector efficiency of class B operation is ___________ A. 50% B. 90% C. 5% D. 5% 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
17. Class C power amplifier has the highest collector efficiency A. C B. A C. B D. AB 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
18. Class ___________ operation gives the maximum distortion A. A B. B C. C D. AB 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
19. An AF amplifier is shielded to ___________ A. Keep the amplifier cool B. Protect from rusting C. Prevent induction due to stray magnetic fields 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
20. The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ? A. 10 W B. 15 W C. 5 W D. 20 W 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