-MCQ-FM modulator is used to transmit a cosine message signal with 4V amplitude and 20Hz frequency. The frequency deviation constant kf = 25 Hz/V, the carrier is a cosine sign with an amplitude of 10V and a frequency of 2000Hz. The FM modulated signal is passed through a bandpass filter and 90% of the power of the modulated signal remains. What is the bandwidth of the FM modulated signal in this case?a) 240hz b) 20hz c) 100hz d)200hz B = 0.1B = 0.2 B = 0.5 B = 1 B= 2 B = 5 B= 8B = 100.9980.9900.9380.7650.224-0.1780.172-0.2460.0500.1000.2420.4400.577-0.3280.2350.043120.0010.0050.0310.1150.3530.047-0.1130.255230.0200.1290.0340.365-0.2910.058340.0020.391 -0.105-0.220450.0070.2610.186-0.23456.0.0010.1310.338-0.0146.70.0530.3210.21778.0.0180.2230.31889.0.0060.1260.292100.0010.0610.20710110.0260.12311120.0100.06312130.0030.02913140.0010.01214150.00415160.00116

message signal with Am= 4V amplitude and fm = 20Hz frequency. The frequency deviation constant kf…

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Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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-MCQ-

FM modulator is used to transmit a cosine message signal with 4V amplitude and 20Hz frequency. The frequency deviation constant kf = 25 Hz/V, the carrier is a cosine sign with an amplitude of 10V and a frequency of 2000Hz. The FM modulated signal is passed through a bandpass filter and 90% of the power of the modulated signal remains. What is the bandwidth of the FM modulated signal in this case?

a) 240hz b) 20hz c) 100hz d)200hz

B = 0.1
B = 0.2 B = 0.5 B = 1 B= 2 B = 5 B= 8
B = 10
0.998
0.990
0.938
0.765
0.224
-0.178
0.172
-0.246
0.050
0.100
0.242
0.440
0.577
-0.328
0.235
0.043
1
2
0.001
0.005
0.031
0.115
0.353
0.047
-0.113
0.255
2
3
0.020
0.129
0.034
0.365
-0.291
0.058
3
4
0.002
0.391 -0.105
-0.220
4
5
0.007
0.261
0.186
-0.234
5
6.
0.001
0.131
0.338
-0.014
6.
7
0.053
0.321
0.217
7
8.
0.018
0.223
0.318
8
9.
0.006
0.126
0.292
10
0.001
0.061
0.207
10
11
0.026
0.123
11
12
0.010
0.063
12
13
0.003
0.029
13
14
0.001
0.012
14
15
0.004
15
16
0.001
16

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