1. In a superhetrodyne receiver, the difference frequency is chosen as the IF rather than the sum frequency because ___________ A. The difference frequency is closer to oscillator frequency B. Lower frequencies are easier to amplify C. Only the difference frequency can be modulated 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
2. Modulation is done in ___________ A. Transmitter B. Radio receiver C. Between transmitter and radio receiver 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
3. Demodulation is done in ___________ A. Receiving antenna B. Transmitter C. Radio receiver D. Transmitting antenna 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
4. In the above question, what is the power in sidebands? A. 8 kW B. 6 kW C. 06 kW D. 9 kW 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
5. Superhertodyne principle refers to A. Using a large number of amplifier stages B. Using a push-pull circuit C. Obtaining lower fixed intermediate frequency 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
6. At 100% modulation, the power in each sideband is ___________ of that of carrier A. 50% B. 40% C. 60% 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
7. In a transmitter ___________ oscillator is used A. Hartley B. RC phase-shift C. Wien-bridge D. Crystal 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
8. If level of modulation is increased ___________ power is increased A. Carrier B. Sideband C. Carrier as well as sideband 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
9. Overmodulation (amplitude) occurs when signal amplitude is ___________ carrier amplitude A. Equal to B. Greater than C. Less than 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
10. If modulation is 100% then signal amplitude is ___________ carrier amplitude A. Equal to B. Greater than C. Less than 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
