31. In amplitude modulation the upper and lower side are mirror images of each other and hence contain ….. Information.
(a) Same
(b) Less
(c) More
(d) Any of the above
32. In amplitude modulation the upper and lower side are mirror images of each other and hence contain ….. Information.
(a) Same
(b) Less
(c) More
(d) Any of the above
33. Very heavy rain cause …….. noise at earth stations than all other noise sources combined together.
(a) Less
(b) More
(c) Either of the above
(d) None of the above
34. When a communication satellite passes into earth’s shadow, its temperature drops to about :
(a) 123 K
(b) 223 K
(c) 273 K
(d) 373 K
35. In time-division multiplexing ……….. signals, occupies/occupy the channel at one instant.
(a) Only one
(b) Two
(c) Three
(d) None of the above
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