Thermionic Emission

1. Mention the 2 types of deflection in an oscilloscope

Question 1 of 19

2. How is vertical deflection achieved in an oscilloscope?

Question 2 of 19

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

Question 3 of 19

4. How is horizontal deflection achieved in an oscilloscope?

Question 4 of 19

5. Mention the properties of cathode rays

Question 5 of 19

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

Question 6 of 19

7. Define Thermionic emission

Question 7 of 19

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

Question 8 of 19

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

Question 9 of 19

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

Question 10 of 19

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

Question 11 of 19

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

Question 12 of 19

13. Mention the parts of cathode ray oscilloscope?

Question 13 of 19

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

Question 14 of 19

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

Question 15 of 19

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

Question 16 of 19

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

Question 17 of 19

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

Question 18 of 19

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

Question 19 of 19