
Introduction to Electronic Communication
Authored by Dan Lauresta
Other
University
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Having an information signal change some characteristic of a carrier signal is called
Having an information signal change some characteristic of a carrier signal is called
Multiplexing
Modulation
Duplexing
Linear mixing
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not true about AM?
Which of the following is not true about AM?
the carrier amplitude varies
the carrier frequency remains constant
the carrier frequency changes
the information signal amplitude changes the carrier amplitude
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The opposite of modulation is
The opposite of modulation is
reverse modulation
downward modulation
unmodulation
demodulation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process of superimposing an intelligence frequency to a higher frequency?
Modulation
Detection
Multiplexing
Scrambling
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When the carrier is modulated 75%, the total power increases by what percentage over that of the carrier alone?
50%
75%
28%
100%
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
The ratio of the peak modulating signal voltage to the peak carrier voltage is referred to as
modulation ratio
percentage of modulation
modulation index
coefficient of modulation
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For ideal AM, which of the following is true?
m = 0
m = 1
m < 1
m > 1
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