
Basic Science : Television 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 photosensitive plate of an Iconoscope is known as |
mosaic |
camera |
grid |
electron gun |
12.Scanning is |
the process in which light audio frequency variations are converted into voltage variations |
the process in which light intensity is converted into variations in potentials |
done by a beam of positive rays |
the process in which audio frequency variations are converted into corresponding video frequency variations |
13.In television broadcasting, video signals are produced using |
an oscillator |
a microphone |
a loud speaker |
an iconoscope |
14.In an iconoscope, in scanning the image, during the blanking period, the grid control is supplied with a |
low negative potential |
high negative potential |
high positive potential |
low positive potential |
15.In TV transmission, the sound waves are transmitted by |
phase modulation |
frequency modulation |
amplitude modulation |
amplitude or phase modulation |
More Television QUESTIONS AND ANSWERS available in next pages
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