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26404-11 Basic Electronic Theory

1. The schematic symbol for an LED is the same as that of a diode with the addition of a(n) ________.

Question 1 of 30

2. In order to permit the emergence of the maximum number of photons in an LED, the conducting surface ________.

Question 2 of 30

3. When possible, transistor casings will have some marking to indicate ________.

Question 3 of 30

4. The process of giving off light by applying an electrical source of energy is called ________.

Question 4 of 30

5. On a transistor, control voltages are applied to the ________.

Question 5 of 30

6. What semiconductor material comprises the base of an NPN transistor?

Question 6 of 30

7. How many diodes are required to form a full-wave AC rectifier circuit?

Question 7 of 30

8. Convert AC power to DC power using ________.

Question 8 of 30

9. High-power transistors are manufactured in which configuration?

Question 9 of 30

10. The applied voltage does not have to exceed the breakover voltage in order for conduction to begin on a(n) ________.

Question 10 of 30

11. One end of a diode has a beveled end which indicates that it is the ________.

Question 11 of 30

12. A transistor is made by joining how many layers of semiconductor material?

Question 12 of 30

13. Which of the following can be viewed as a diac with a gate terminal added?

Question 13 of 30

14. Which of the following makes the best conductor?

Question 14 of 30

15. In the figure above, the lead marked A is the transistor ________.

Question 15 of 30

16. The difference between an SCR and a diode is that an SCR ________.

Question 16 of 30

17. In the figure above, the lead marked C is the transistor ________.

Question 17 of 30

18. An SRC is made from adjoining layers of semiconductor material in the ________.

Question 18 of 30

19. The two basic types of diodes are the silicon and the ________.

Question 19 of 30

20. The difference between an N -channel and a P-channel JFET is ________.

Question 20 of 30

21. The point at which avalanche breakover occurs in a diode is known as the ________.

Question 21 of 30

22. The figure above shows the electrical symbol for a(n) ________.

Question 22 of 30

23. When used in a circuit, an LED is generally operated at about ________.

Question 23 of 30

24. Silicon is widely used as a semiconductor because it ________.

Question 24 of 30

25. Which of the following can be thought of as an AC switch?

Question 25 of 30

26. What is the name given to the areas where P -type materials join N-type materials to form a diode?

Question 26 of 30

27. How many diodes are required to form a bridge rectifier?

Question 27 of 30

28. How many diodes are required to convert three-phase AC power to high-efficiency DC power?

Question 28 of 30

29. Which of the following is an excellent conductor but too expensive to use on a large scale?

Question 29 of 30

30. What is the average number of valence electrons in a conductor atom?

Question 30 of 30


 

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