LESSON 1/LEARNING EVENT 1
PRACTICE EXERCISE
Instructions: Select the BEST response, and circle the correct answer.
1.
What is the speed of radio waves?
a.
186,000 miles per second.
b.
186,000,000 miles per second.
c.
300,000 miles per second.
d.
302,808 miles per second.
2.
The frequency range of the VLF band is--
a.
.03 to 3 MHz.
b.
below .03 MHz or below 30 kHz.
c.
30 to 300 MHz.
d.
above 3 MHz.
3.
Which of the following will not reflect radio energy?
a.
Sea water.
b.
Fresh water.
c.
Jungle.
d.
Metal buildings.
4.
Refraction is--
a.
radio energy entering and leaving a layer at the same angle.
b.
similar to radio energy striking a mirror.
c.
similar to disfraction.
d.
radio energy bending upon entering a ionospheric layer and
returning to earth.
13
Previous Page
