LESSON 2
PRACTICE EXERCISE
(PERFORMANCE-ORIENTED)
1.
The troposphere is approximately how many miles above the earth's surface?
a.
6 1/2 miles.
b.
3 1/2 miles.
c.
4 1/2 miles.
d.
2 1/2 miles.
2.
Where is the location of the stratosphere?
a.
Between the earth and ionosphere.
b.
Above the ionosphere.
c.
Between the troposphere and ionosphere.
d.
Below the troposphere.
3.
What are the two fields set up in the antenna by the fluctuating energy?
a.
b.
Left and right fields.
c.
Modulation and carrier fields.
d.
Passive and active fields.
4.
What is the advantage of using a directional transmitting antenna?
a.
You can see the direction of travel.
b.
You can concentrate the radiation.
c.
You can interface with friendly stations.
d.
None of the above.
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