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11. In a TV receiver, the blanking pulses are fed to
A. the horizontal deflector plates
B. the vertical deflector plates
C. the control grid of the electron gun the cathode
D. the cathode
Explanation:
12. The frequency of scanning in a television set in frames per second is
A. 25
B. 50
C. 525
D. 30
Explanation:
13. When the individual images are transmitted and reproduced at the rate of 25 per sec. human eye records these image as a continuous process. This is due to
A. motion of the picture
B. ability of vision
C. persistence of vision
D. capacity of vision
Explanation:
14. The line synchronizing pulse is applied to
A. the vertical deflector plates
B. the horizontal deflector plates
C. control grid
D. filament
Explanation:
15. When the image is focused on the mosaic, the globules become
A. luminous spot
B. negatively charged
C. neutralized
D. positively charged
Explanation:
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