1. The condition for maximum power transfer is that the load resistance must be equal to
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2. A semiconductor in its pure state is said to be |
3. The ninth shell of an atom is capable of containing ??????. electrons. |
4. Phosphorous is a donor element. |
5. About ???? volts is required to overcome the potential barrier is germanium diode. |
6. In an n-p-n transistor action, all the electrons from the emitter do not recombine with hole at the base. |
7. The optimum point on a transistor load line is called the |
8. Three phase rectification provides smoother output than single phase? |
9. A semiconductor doped to have holes as majority charge carriers is a ???(material). |
10. In full wave rectification with a center-tap transformer, how many diodes are required? |
11. The electric field produced due to recombination of holes and electrons at a p-n junction creates the
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12. A semiconductor doped to have electrons as majority charge carriers is ???(material). |
13. ??is responsible for partial conduction in semiconductor. |
14. A p-type material joined to an n-type material forms an electronic component called |
15. One purpose of using a capacity (usually electrolytic) in a power supply is for |
16. As a switch that is ON the transistor operates in the?????region |
17. Materials whose electrical properties lie between those of conductors and insulators are known as |
18. As a switch the transistor operates in how many regions? |
19. About???? volts is required to overcome the potential barrier is silicon diode. |
20. Zener diodes are designed to operate in |
21. A diode behaves like a non-return valve. |
22. The static input resistance of a transistor is given by |
23. Boron is an acceptor element. |
24. For three phase ac rectification how many diodes are required? |
25. Doping is the process of introducing????.into a semiconductor material. |
26. During partial conduction in a semiconductor ?????? move relative to electrons. |
27. Apart from a capacitor,??. can also be used remove ac ripples. |
28. The shells of an atom represent various energy levels |
29. In removing ac ripples with a capacitor, it must be connected in parallel with the load |
30. In conductors, the valence and conduction bands overlap |
31. The static output resistance of a transistor is given by |
32. Which of the following can be used for voltage stabilization?
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33. For proper transistor action, the base-emitter junction must be forward biased, and the collector-emitter junction must be reverse biased for a common emitter configuration. |
34. The purpose of using a capacitor (usually ceramic) in a power supply is for
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35. As a switch that is OFF the transistor operates in the??????????region. |
36. The emitter current is the sum of base current and collector current. |
37. The process of removing ac ripples from a rectified ac power is called |
38. As an amplifier, a transistor operates in the??????????????? region |
39. In a transistor the collector junction is more heavily doped than the emitter junction |
40. The static current gain of a transistor is given by |