Basic Science : Modulation And Demodulation QUESTIONS AND ANSWERS :: part1 : 11 to 15
Following Basic Science multiple choice objective type questions and answers will help you in many types of 2024 job and other entrance examinations :
11.The type of modulation used in the T.V picture transmission is |
| amplitude modulation |
| phase modulation |
| frequency modulation |
| phase or frequency modulation |
12.For effective modulation, the degree of modulation should |
| be small |
| never exceed 100% |
| be large |
| always more than 100% |
13.In a frequency modulated wave |
| amplitude varies with the signal |
| frequency varies with the signal |
| amplitude and frequency vary with the signal |
| amplitude and frequency are constant |
14.In super-hetrodyne radio receiver, the frequency of selected radio wave is converted to |
| a higher frequency |
| an intermediate frequency |
| an audio frequency |
| a microwave frequency |
15.the number of modulation techniques is |
| four |
| three |
| two |
| one |
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