Electronics &Communication Engineering Subject code: 080290057 Subject: Television and Video Engineering (For seventh semester ECE ) 2 Mark Questions and Answers 1. Mention the major function of the camera tube? The function of the camera tube is to convert an optical image into electrical signals. 2. Define visual acuity? Visual acuity can be defined as the ability of human eye to resolve finer details in a picture 3. What do you refer by persistence of eye? The persistence of eye refers to the storage capability of the human eye 4.Define luminous intensity? It is the measure of intensity responsible for stimulating visual sensation. 5.Define aspect ratio? Aspect ratio can be defined as the ratio of width to height of the picture frame. For television, it is standardized as 4:3. 6.Define luminous flux? Luminous flux can be defined as the radiated luminous power or power of visible light expressed interms of its effect on the average or normal human eye. 7.Define luminance? Luminance can be defined as the quantity of light intensity emitted per square centimeter of an illuminated area. 8.What do you understand by illuminance? Illuminance is the average luminous flux incident on to a surface. 9.what do you mean by resolving power or resolution? It is the ability of the image reproducing system to represent the fine structure of an object.
Electronics &Communication Engineering Subject code: 080290057 Subject: Television and Video Engineering (For seventh semester ECE ) 2 Mark Questions and Answers 1. Mention the major function of the camera tube? The function of the camera tube is to convert an optical image into electrical signals. 2. Define visual acuity? Visual acuity can be defined as the ability of human eye to resolve finer details in a picture 3. What do you refer by persistence of eye? The persistence of eye refers to the storage capability of the human eye 4.Define luminous intensity? It is the measure of intensity responsible for stimulating visual sensation. 5.Define aspect ratio? Aspect ratio can be defined as the ratio of width to height of the picture frame. For television, it is standardized as 4:3. 6.Define luminous flux? Luminous flux can be defined as the radiated luminous power or power of visible light expressed interms of its effect on the average or normal human eye. 7.Define luminance? Luminance can be defined as the quantity of light intensity emitted per square centimeter of an illuminated area. 8.What do you understand by illuminance? Illuminance is the average luminous flux incident on to a surface. 9.what do you mean by resolving power or resolution? It is the ability of the image reproducing system to represent the fine structure of an object.
television___video_engineering.docx