Objective Questions on TV camera tube
Objective Questions on TV camera tube, MCQs on TV camera tube, Multiple Choice Questions on TV camera tube, MCQ on Plumbicin camera tube, MCQ on Vidicon TV camera tube, MCQ on Image Orthicon Camera tube, MCQ in Television Camera Tube, Engineering MCQ, Television MCQ
Multiple Choice Questions
Electronics from the electron gun strike the target plate of a camera tube with
- Varying velocity
- Low velocity
- High velocity
- Medium velocity
Answer: Low velocity
In photo emission the number of electron emitted from the target surface
- Varies directly as the wavelength of incident
- Varies directly as the frequency of light
- is independent of wavelength
- None of these
Answer: is independent of wavelength
Image lag in vidicon is
- Severe
- Negligible
- Absent
- Equal to the plumbicon
Answer: Severe
Image orthicon is based on
- Photo conduction principle
- Photo emission principle
- Any one of two
- None of these
Answer: Photo emission principle
Target plate of plumbicon consists of
- Antimony
- Trisulphide
- Selenium tin oxide
- Lead oxide
Answer: Lead oxide
Spectral response of plumbicon is poor in
- Blue
- Green
- Cyan
- Red
Answer: Red
Vidicon is suitable for outdoor use because
- Its variable gamma characteristics
- Its high contrast capability
- Its self adjustable senstivity
- Its good spectral response
Answer: Its good spectral response
Plumbicon has gamma of
- 0.7
- Near unity
- 0.5
- 0.6 to 0.9
Answer: Near unity
Halo is formed in
- Vidicon
- Plumbicon
- Image orthicon
- None of these
Answer: Plumbicon
IR respose is maximum in
- Vidicon
- Plumbicon
- Image orthicon
- Newvicon
Answer: Newvicon
Operation of CCD image sensors is based on
- Photoconductivity
- Photovoltic principle
- Photoemission
- None of these
Answer: Photovoltic principle
The most suitable camera tube for industrial application is
- Iconoscope
- Image orthicon
- Standard vidicon
- Plumbicon
Answer: Standard vidicon
The approximate value of target voltage in standard vidicon is
- 300 V
- 30 V to 40 V
- Equal to anode voltage
- None of these
Answer: 30 V to 40 V
Scanning in solid state camera is not done by deflecting on electron beam but is done by
- Principle of shift register
- Principle of picture tube
- Principle of camera tube
- None of these
Answer: Principle of shift register
The image lag in a camera tube
- is a problem of beam aperture
- is a problem of target plate
- leads to appearance of ghosts when the picture is reproduced
- None of these
Answer: is a problem of target plate
The most suitable camera for broadcast purpose is
- Plumbicon
- Image orthicon
- Standard vidicon
- None of these
Answer: Image orthicon
An image orthicon camera target is
- always anode potential stabilized
- always cathode potential stabilized
- both
- Non of these
Answer: always cathode potential stabilized
Related Post: