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Electronic Devices - Communications

Exercise : Communications - General Questions
6.
In AM, the carrier is changed by a modulating signal. What parameter of the carrier is changed?
amplitude
frequency
pulse width
phase
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
For a four-quadrant linear multiplier, what is the output voltage, given input voltages of Vx = +2 V and Vy = –10 V?
+2 V
+1 V
–2 V
–1 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The output spectrum of a ________ modulator includes upper-side and lower-side frequencies and the carrier frequency.
balanced
standard amplitude
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Amplitude modulation is a ________ process.
multiplication
division
sum/difference
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
What does VCO stand for?
Visually-Controlled Organization
Voltage-Controlled Oscillator
Voltage-Centered Oscilloscope
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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