TC 9-62
CHAPTER 1
CHECK-ON-LEARNING QUESTIONS
When you are satisfied that you have answered every question to the best of your ability,
check your answers using Appendix A. If you missed eight or more questions, you should
review the chapter, paying particular attention to the areas in which your answers were
incorrect.
1.
What is a solid state device?
2.
How would you define the term negative temperature coefficient?
3.
Semiconductor are used extensively in what three areas?
4.
What is the life expectancy of transistors compared to ordinary electron tubes?
5.
What are the three different states of matter?
6.
What is the smallest particle into which an element can be broken down and still retain all
its original properties?
7.
An atom is basically composed of what?
8.
What do you call the outer shell of an atom?
9.
What is a negative ion?
10.
An electron can exist in what two energy bands?
11.
What determines, in terms of energy bands, whether a substance is a good insulator,
semiconductor, or conductor?
12.
What determines the chemical activity of an atom?
13.
An atom has a complete outer shell when it posses how many valence electrons?
14.
What is the term to describe the sharing of valence electrons between two or more atoms?
15.
What is the name given to the movement of electrons in a semiconductor?
16.
What is the purpose of semiconductor doping?
17.
When can a N-type impurity easily lose its extra valence electron?
18.
Pure germanium may be converted into a N-type semiconductor by doping it with what?
19.
What is the purpose of a PN junction diode?
20.
The semiconductor should be in how many pieces to form a proper PN junction?
21.
What type of PN diode is formed by using a fine metal wire and a section of N-type
semiconductor material?
22.
Conduction in which type of semiconductor material is similar to conduction in a copper
wire?
23.
Instead of negative electrons, conduction in the P-type material is by what?
24.
What is the name of the area in a PN junction that has a shortage of electrons and holes?
25.
What terminal of a battery is connected to the P-type material in order to reverse bias a
junction diode?
26.
What is the name of the simplest rectifier circuit?
1-46
TC 9-62
23 June 2005
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