Television Camera Tube Viva Questions Television Camera Tube Viva Questions, Viva Questions on Television Camera Tube, TV Camera Tube Viva Questions, Plumbicon Camera Tube Viva Questions, Image Orthicon Camera Tube Viva Questions, Vidicon Camera Tube Viva Questions, Engineering Viva Questions, Television Camera Tube Viva Questions Short-answer Questions Q.1. What is a charge image? Ans. Charge image is a variation of charge from point to point on the surface of the target of a camera tube proportionate to the intensity of light varying from pixel to pixel in a picture. Q.2. Why is the sensitivity of image orthicon the highest? Ans. Image orthicon multiplies the number of electrons by secondary emission.…

Television Concepts Viva Questions Television Concepts Viva Questions, Fundamental Concepts of Television Viva Questions, Short Answer Type Questions on Fundamental Concepts of Television, Engineering Viva Questions, Television Engineering Questions Short Answer Questions Q.1. Why flicker is not removed by progressive scanning? Ans. Flicker can be removed by doubling the speed of progressive scanning, but doubling the speed will double the bandwidth, which is not desirable. Q.2. How does a picture appear one whole while it is actually presented truncated in two halves alternately in odd and even fields? Ans.  As the scanning lines of the even fields do not appear with the lines of the odd fields, the picture does…

Light & Sound Basic Viva Questions Light & Sound Basic Viva Questions, Short Answer Type Questions on Light and Sound, Television Engineering Viva Questions, Engineering Viva Questions Short Answer Type Questions Q.1. Why picture frames frequency is 25 per second in India and 30 per second in the USA? Ans. 25 is an exact submultiple of electric mains frequency in India and 30 is an exact submultiple of electric mains frequency in the USA. Q.2. Why green, red and blue are called primary colours? Ans. Red, blue and green is called primary colours because all other colours can be formed by additive mixing of these three colours. Q.3. What types…