1. Skip distance depends on time of day and angle of incidence. A. True B. False 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. It is found that a ship to ship communication suffers from fading. This can be avoided by using A. Space diversity B. Frequency diversity C. Broad band antenna D. Directional antenna 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
3. A buffer amplifier is A. A double-tuned amplifier B. A high gain D.C. amplifier C. A cathode follower stage 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
4. SSB can be generated by A. Filter method B. Phase cancellation method C. Good attenuation characteristics D. All of the above 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. What is the purpose of peak clipper circuits in radio transmitters? A. To prevent overmodulation B. To reduce bandwidth C. To increase bandwidth D. To regulate oscillator I/P voltage 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. The direction of rotation of a CD is A. Clockwise B. Anticlockwise C. Clockwise or anticlockwise depending on frequency of data stored D. Mostly anticlockwise but some times clockwise 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. A woofer should be fed from the input through a A. Low pass filter B. High pass filter C. Band pass filter D. Band stop filter 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
8. The characteristic impedance of a twin wire feeder used for TV signals is about A. 1000 ohm B. 500 ohm C. 300 ohm D. 100 ohm 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
9. In EM waves, polarization A. Is always vertical in an isotropic medium B. Is caused by reflection C. Is due to transverse nature of waves D. Results from longitudinal nature of waves 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
10. The frequency range of 300 kHz to 3000 kHz is known as A. Low frequency B. Medium frequency C. High frequency D. Very high frequency 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
