Free Exam: Season 2 Episode 4
Number of Questions in Test: 100
Number of Questions in Preview: 5
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What led to the development of Very High Frequency (VHF) and Ultra High Frequency (UHF) radio systems during World War II?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 2
The two primary types of radio waves are...
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 3
What condition causes the downward bending of a radio wave as it grazes the top of an obstruction such as a mountain peak?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 4
During periods of maximum sunspot activity, what is the density level and altitude effect of the F layer?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |
Question 5
What type of frequency is the highest frequency that returns to earth when it is transmitted vertically under given ionospheric conditions?
| Type: | Multiple choice |
| Points: | 1 |
| Randomize answers: | Yes |