Television Camera Tubes » Exercise – 1
1. Electrons from the electron gun strike the target plate of a camera tube with :
(a) Varying velocity
(b) Low velocity
(c) High velocity
(d) Medium velocity
2. Image orthicon is based on :
(a) Photo conduction principle
(b) Photo emission principle
(c) Any one of two
(d) None of these
3. Vidicon is suitable for outdoor use because :
(a) Its variable gamma characteristics
(b) Its high contrast capability
(c) Its self adjustable sensitivity
(d) Its good spectral response
4. Operation of CCD image sensors is based on :
(a) Photoconductivity
(b) Photovoltic principle
(c) photoemission
(d) None of these
5. The image lag in a camera tube :
(a) Is a problem of beam aperture
(b) Is a problem of target plate
(c) Leads to appearance of ghost when the picture is reproduced
(d) None of these
Related Posts
Television Camera Tubes » Exercise - 1 15. The most suitable camera tube for industrial application is : (a) Iconoscope (b) Image orthicon (c) Standard vidicon (d) plumbicon- Television Camera Tubes » Exercise - 1 11. Infra-red response is maximum in : (a) Vidicon (b) Plumbicon (c) Image orthicon (d) Newvicon
- Television Camera Tubes » Exercise - 1 12. The most suitable camera for broadcast purpose is : (a) Plumbicon (b) Image orthicon (c) Standard vidicon (d) None of these
- Television Camera Tubes » Exercise - 18. Halo is formed in : (a) Vidicon (b) Plumbicon (c) Image orthicon (d) Newvicon
- Television Camera Tubes » Exercise - 16. An image orthicon camera target is : (a) Always anode potential stabilised (b) Always cathode potential stabilised (c) Either of a and b (d) None of these