Thermionic Emission

1. What causes the electric field between the anodes in a cathode ray oscilloscope?

Question 1 of 19

2. Mention the parts of cathode ray oscilloscope?

Question 2 of 19

3. Which of the following statement is INCORRECT about Cathode rays?

Question 3 of 19

4. Mention the 2 types of deflection in an oscilloscope

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5. Mention the properties of cathode rays

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6. Which part of the cathode ray tube attracts electrons?

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7. Name what controls the intensity of the cathode ray beam in an oscilloscope

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8. Which of the following is NOT among the uses of a cathode ray oscilloscope?

Question 8 of 19

9. How is horizontal deflection achieved in an oscilloscope?

Question 9 of 19

10. State the reason why the screen of the cathode ray tube oscilloscope coated with graphite?

Question 10 of 19

11. In the cathode ray tube, which part of it emits electrons by thermionic emission?

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12. Define Thermionic emission

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13. What is produced when cathode rays are suddenly stopped by a metal target?

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14. How is vertical deflection achieved in an oscilloscope?

Question 14 of 19

15. In a cathode ray oscilloscope which part is used to supply the electrons to be directed towards the screen?

Question 15 of 19

16. Which type of current is supplied to the Extra High Tension (EHT) source of the cathode ray oscilloscope?

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17. Why is the tube evacuated in the cathode ray tube?

Question 17 of 19

18. Cathode rays are a stream of fast moving electrons?

Question 18 of 19

19. Explain how a greater degree of focusing of cathode ray beams is achieved in an oscilloscope?

Question 19 of 19