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