LESSON 1
PRACTICE EXERCISE
The following items will test your grasp of the material covered in this lesson. There is only one correct
answer for each item. When you complete the exercise, check your answers with the answer key that
follows. If you answer any item incorrectly, study again that part of the lesson which contains the
portion involved.
1.
What is the electromagnetic field that is associated with the energy field stored in the antenna?
A.
Induction field
B.
Magnetic field
C.
Radiation field
D.
Modulation field
2.
What is the range of electromagnetic waves arranged in order of their frequencies?
A.
Amplitude
B.
Wave propagation
C.
Spectrum
D.
Hertz
3.
What is the height of a wave crest above the reference line?
A.
Amplitude
B.
C.
Cycle
D.
4.
The combination of one complete positive and one complete negative alternation is one ______.
A.
B.
Amplitude
C.
D.
Cycle
5.
The distance in space occupied by one cycle of a radio wave for a given period of time is
______.
A.
Amplitude
B.
Wave motion
C.
D.
Cycle
SS0130
1-16
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