11. Man made noise are ___________ variations. A. Amplitude B. Frequency C. Phase D. Both phase and frequency 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
12. In TV transmission, picture signal is ___________ modulated A. Frequency B. Phase C. Amplitude 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
13. In TV transmission, sound signal is ___________ modulated A. Amplitude B. Frequency C. Phase 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
14. Most of the amplification in a superhetrodyne receiver occurs at ___________ stage A. IF B. RF amplifier C. Audio amplifier D. Detector 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
15. The superhetrodyne principle provides selectivity at ___________ stage A. RF B. IF C. audio D. Before RF 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
16. A high Q tuned circuit will permit an amplifier to have high ___________ A. Fidelity B. Frequency range C. Sensitivity D. Selectivity 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. If a radio receiver amplifies all the signal frequencies equally well, it is said to have high ___________ A. Sensitivity B. Selectivity C. Distortion D. Fidelity 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
18. In amplitude modulation, bandwidth is ___________ the audio signal frequency A. Thrice B. Four times C. Twice 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
19. A 100 V carrier is made to vary between 160 V and 40 V by the signal. What is the modulation factor? A. 3 B. 6 C. 5 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
20. In amplitude modulation, the ___________ of carrier is varied according to the strength of the signal. A. Amplitude B. Frequency C. Phase 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