Question: The deflection of an electron beam on a CTR screen is 10 mm. Suppose the pre-accelerating anode voltage is halved and the potential between deflecting plates is doubled, the deflection of the electron beam will be :
Answer:
MCQ: The deflection of an electron beam on a CTR screen is 10 mm. Suppose the pre-accelerating anode voltage is halved and the potential between deflecting plates is doubled, the deflection of the electron beam will be :
Correct Answer:
A. 80 mm
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Related Questions
- 1. If the distance of screen from a CRT to centre of deflection plates is 15 cm, the length of deflection plates is 2 cm, the distance between plates is 1 cm and accelerating voltage is 500 V. the deflection sensitivity is :
- 2. Post acceleration is needed in a CRO if the frequency of the signal is :
- 3. P<sub>1 </sub>phosphor material is used for display in CRTs for:
- 4. An aquadag is used in a CRO to collect :
- 5. A thin aluminium film is usually deposited on the non viewing side of the phosphor because,
- 6. During the retrace time, the electrons forming the horizontal beam
- 7. The bandwidth of a CRO is from 0 – 20 MHz. the fastest rise time a sine wave can have to be accurately reproduced by the instrument is
- 8. The horizontal amplifier should be designed for
- 9. A vertical amplifier for a CRO can be designed for:
- 10. In an oscilloscope, when the unknown the unknown signals applied to the vertical plates is being synchronized with the sweep signal applied to horizontal plates, the pattern seen on the CRO screen moves towards the right. It means that,
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