IIT JEE : Principles Of Communication QUESTIONS AND ANSWERS :: part3 : 11 to 15
Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :
11.The antenna current of an AM transmission is 8A when only carrier is sent, but is increases to 8.93 A when the carrier is modulate. The modulation of the wave is |
| 43% |
| 70.7% |
| 57% |
| 60% |
12.The layer that absorbs largest proportion of UV rays is |
| Ozone layer |
| Isoposphere |
| Ionosphere |
| Mesosphere |
13.Bit rate is given by |
| sampling rate + number of bits per cycle |
| sampling rate/number of bits per cycle |
| sampling rate * number of bits per cycle |
| None of these |
14.Lasers are used as an endoscope in which field ? |
| Medical |
| Scientific |
| Communication |
| Entertainment |
15.The total power contact of an AM wave is 1200 W. What will be modulation index if each side band contains 150 W of power |
| 81.6% |
| 60% |
| 75% |
| None of these |
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