11. Tropospheric scatter propagation is not subject to any fading. A. True B. False 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
12. A square corner reflector is used in which of the following? A. TV broadcast B. Point-to-point communication C. Radio astronomy 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
13. In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to A. Decrease in the value of reactance B. An increase in the value of reactance C. No change in the reactance value D. No change in the impedance value 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. In case of surface waves the field strength at a point is directly proportional to A. Antenna height B. Wave frequency C. Current of the antenna D. Distance of the point from the antenna 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
15. The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a A. Null B. Circle C. Figure of eight 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
16. In a perfect conductor the incident and reflected wave combine to produce A. A stronger incident wave B. A stronger reflected wave C. A standing wave which is not progressing 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
17. It is best to use for coupling a coaxial line to a parallel wire transmission line. A. Directional Coupler B. Balun C. Slotted line D. Tee 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
18. In H-plane metal plate lens the travelling wave front is A. Totally retarded B. Retarded C. Accelerated D. Neither accelerated nor retarded 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
19. Which of the following is multiband HF receiving antenna? A. Square loop B. Log-periodic C. Conical horn D. Folded dipole 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. An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 O. The standing wave ratio will be A. 1.5 B. 2.5 C. 3.5 D. 4.5 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