8. What is the modulation index of the AM signal shown in Figure 2-16?a. 1.5b. 1.0c. 0.5d. 0.1⁹. What is the percentage of modulation (% Mod.) of an AM signal witha trapezoidal pattern as shown in Figure 2-17 if each of the verticaldivisions is 0.5V?a. 100%b. 150%c. 20%d. 33% 7. If a 2000 kHz carrier signal (f) is amplitude modulated by a 3 kHzmessage signal (fm), what frequencies are present in the frequencyspectrum of the AM signal?a. 3 kHz, 6 kHz, and 2000 kHzb. 1997 kHz, 2000 kHz, and 2003 kHzc. 2000 kHz and 2003 kHzd. 1997 kHz and 2003 kHz1ODULATIONZEROREFERENCELINE

7. If a 2000 kHz carrier signal (f) is amplitude modulated by a 3 kHz message signal (fm), what frequencies are present in the frequency spectrum of the AM signal? a. 3 kHz, 6 kHz, and 2000 kHz b. 1997 kHz, 2000 kHz, and 2003 kHz c. 2000 kHz and 2003 kHz d. 1997 kHz and 2003 kHz ZERO REFERENCE LINE

7. If a 2000 kHz carrier signal (f) is amplitude modulated by a 3 kHz message signal (fm), what frequencies are present in the frequency spectrum of the AM signal? a. 3 kHz, 6 kHz, and 2000 kHz b. 1997 kHz, 2000 kHz, and 2003 kHz c. 2000 kHz and 2003 kHz d. 1997 kHz and 2003 kHz ZERO REFERENCE LINE

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Concept explainers

Amplitude modulation

A radio signal can carry information in the form of sound or image for broadcasting or communication. For it to be sent to a greater distance, the signal must be changed or modulated in some way. One of the easiest way is to change the amplitude of the signal with variations of the video or the audio signal. This is called Amplitude Modulaton. In this modulation information of message is carried in amplitude of carrier signal.

Question

8. What is the modulation index of the AM signal shown in Figure 2-
16?
a. 1.5
b. 1.0
c. 0.5
d. 0.1
⁹. What is the percentage of modulation (% Mod.) of an AM signal with
a trapezoidal pattern as shown in Figure 2-17 if each of the vertical
divisions is 0.5V?
a. 100%
b. 150%
c. 20%
d. 33%

7. If a 2000 kHz carrier signal (f) is amplitude modulated by a 3 kHz
message signal (fm), what frequencies are present in the frequency
spectrum of the AM signal?
a. 3 kHz, 6 kHz, and 2000 kHz
b. 1997 kHz, 2000 kHz, and 2003 kHz
c. 2000 kHz and 2003 kHz
d. 1997 kHz and 2003 kHz
1ODULATION
ZERO
REFERENCE
LINE

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