Subject: Fundamental Communication 1%TY lI. I.9:01The value of carrier frequency equation forthe FM signal:v(t)= 5 cos(6600t+* 12sin2500t)1005 Hz O1050 Hz1250 Hz OModern FM receivers use de-emphasis* :circuit forreducing the amplitude of highfrequencies in the audio signalincreasing the amplitude of highermodulating frequenciesmaking demodulation easy OThe variation of frequency deviationdepends on the amplitude ofThe audio signal OBoth of theseThe carrier signal 9:1Armstrong system is to generate FM makes* the frequency deviation isBoth of theseMaximum positive valueMinimum negative valueThe disadvantages of using slope detectorvs Foster-seeley discriminatorThe detector operates only for smalldeviation in frequencyBoth of theseLow pass filter of the detector producesdistortion in the detectionThe ratio in which maximum permittedfrequency deviation to the maximum:permitted audio frequency, isThe worst-case modulation indexNone of theseThe best-case modulation index

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The value of carrier frequency equation for the FM signal:v(t)= 5 cos(6600t+ * 12sin2500t) 1005 Hz O 1050 Hz 1250 Hz O

Introductory Circuit Analysis (13th Edition)

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Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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Question

Subject: Fundamental Communication

1%TY lI. I.
9:01
The value of carrier frequency equation for
the FM signal:v(t)= 5 cos(6600t+
* 12sin2500t)
1005 Hz O
1050 Hz
1250 Hz O
Modern FM receivers use de-emphasis
* :circuit for
reducing the amplitude of high
frequencies in the audio signal
increasing the amplitude of higher
modulating frequencies
making demodulation easy O
The variation of frequency deviation
depends on the amplitude of
The audio signal O
Both of these
The carrier signal

9:1
Armstrong system is to generate FM makes
* the frequency deviation is
Both of these
Maximum positive value
Minimum negative value
The disadvantages of using slope detector
vs Foster-seeley discriminator
The detector operates only for small
deviation in frequency
Both of these
Low pass filter of the detector produces
distortion in the detection
The ratio in which maximum permitted
frequency deviation to the maximum
:permitted audio frequency, is
The worst-case modulation index
None of these
The best-case modulation index

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