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Choose one of the choices indicated in the parentheses such as the following sentences have correct messing What is the main purpose of a communication system? a) To transmit information from one point to another b) To amplify signals for better reception c) To filter out unwanted noise dy To generate carrier waves for modulation 2. What the purpose of the modulator in a communication system? a) To generate the cares wave for modulation b) To convert the information signal to a modulated signal c) To filter out unwanted noise d) To amplify the modulated signal for transmission Which component in an FM transmitter is responsible for generating the carrier signal? a) Mixer b) Modulator c) Demodulator d) Oscillator 4 For a FM signal v(t) 25 cos (15 deviation 10 (3456 4 24669, 7321 7.21284) 117 10 sm 15501). Maximum frequency 5. In an AM receiver, which component is responsible for separating the modulating signal from the received AM signal? a) Mixer b) Modulator c) Demodulator dy Oscillator 6. What is the main purpose of a bandpass filter in an AM receiver? a) Amplify the received signal bi Separate the camer frequency c) Eliminate noise from the signal d) Select the desired frequency range 7 Which of the following modulation techniques is used in standard AM broadcasting? a) DSB-SC b) VSB c) SSB d) DSB-LC 8. A 100MHz carrier is frequency modulated by 10 kHz wave For a frequency deviation of 500 kHz, the modulation index of the FM signal is a) 50, b) 100, c) 200, d) 20 9 The purpose of the Nyquist theorem in PCM is to determine? a) the maximum bit rate for a given bandwidth b) the minimum sampling rate for accurate signal reconstruction c) the modulation index for a given carrer frequency d) the bandwidth of the modulated signal 10. In FSK modulation, the number of discrete frequencies used to represent digital data is typically a) 2 b) 4 c) 8 d) 16

Choose one of the choices indicated in the parentheses such as the following sentences have correct messing What is the main purpose of a communication system? a) To transmit information from one point to another b) To amplify signals for better reception c) To filter out unwanted noise dy To generate carrier waves for modulation 2. What the purpose of the modulator in a communication system? a) To generate the cares wave for modulation b) To convert the information signal to a modulated signal c) To filter out unwanted noise d) To amplify the modulated signal for transmission Which component in an FM transmitter is responsible for generating the carrier signal? a) Mixer b) Modulator c) Demodulator d) Oscillator 4 For a FM signal v(t) 25 cos (15 deviation 10 (3456 4 24669, 7321 7.21284) 117 10 sm 15501). Maximum frequency 5. In an AM receiver, which component is responsible for separating the modulating signal from the received AM signal? a) Mixer b) Modulator c) Demodulator dy Oscillator 6. What is the main purpose of a bandpass filter in an AM receiver? a) Amplify the received signal bi Separate the camer frequency c) Eliminate noise from the signal d) Select the desired frequency range 7 Which of the following modulation techniques is used in standard AM broadcasting? a) DSB-SC b) VSB c) SSB d) DSB-LC 8. A 100MHz carrier is frequency modulated by 10 kHz wave For a frequency deviation of 500 kHz, the modulation index of the FM signal is a) 50, b) 100, c) 200, d) 20 9 The purpose of the Nyquist theorem in PCM is to determine? a) the maximum bit rate for a given bandwidth b) the minimum sampling rate for accurate signal reconstruction c) the modulation index for a given carrer frequency d) the bandwidth of the modulated signal 10. In FSK modulation, the number of discrete frequencies used to represent digital data is typically a) 2 b) 4 c) 8 d) 16

Introductory Circuit Analysis (13th Edition)
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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Choose one of the choices indicated in the parentheses such as the following sentences have correct messing What is the main purpose of a communication system? a) To transmit information from one point to another b) To amplify signals for better reception c) To filter out unwanted noise dy To generate carrier waves for modulation 2. What the purpose of the modulator in a communication system? a) To generate the cares wave for modulation b) To convert the information signal to a modulated signal c) To filter out unwanted noise d) To amplify the modulated signal for transmission Which component in an FM transmitter is responsible for generating the carrier signal? a) Mixer b) Modulator c) Demodulator d) Oscillator 4 For a FM signal v(t) 25 cos (15 deviation 10 (3456 4 24669, 7321 7.21284) 117 10 sm 15501). Maximum frequency 5. In an AM receiver, which component is responsible for separating the modulating signal from the received AM signal? a) Mixer b) Modulator c) Demodulator dy Oscillator 6. What is the main purpose of a bandpass filter in an AM receiver? a) Amplify the received signal bi Separate the camer frequency c) Eliminate noise from the signal d) Select the desired frequency range 7 Which of the following modulation techniques is used in standard AM broadcasting? a) DSB-SC b) VSB c) SSB d) DSB-LC 8. A 100MHz carrier is frequency modulated by 10 kHz wave For a frequency deviation of 500 kHz, the modulation index of the FM signal is a) 50, b) 100, c) 200, d) 20 9 The purpose of the Nyquist theorem in PCM is to determine? a) the maximum bit rate for a given bandwidth b) the minimum sampling rate for accurate signal reconstruction c) the modulation index for a given carrer frequency d) the bandwidth of the modulated signal 10. In FSK modulation, the number of discrete frequencies used to represent digital data is typically a) 2 b) 4 c) 8 d) 16
Transcribed Image Text:Choose one of the choices indicated in the parentheses such as the following sentences have correct messing What is the main purpose of a communication system? a) To transmit information from one point to another b) To amplify signals for better reception c) To filter out unwanted noise dy To generate carrier waves for modulation 2. What the purpose of the modulator in a communication system? a) To generate the cares wave for modulation b) To convert the information signal to a modulated signal c) To filter out unwanted noise d) To amplify the modulated signal for transmission Which component in an FM transmitter is responsible for generating the carrier signal? a) Mixer b) Modulator c) Demodulator d) Oscillator 4 For a FM signal v(t) 25 cos (15 deviation 10 (3456 4 24669, 7321 7.21284) 117 10 sm 15501). Maximum frequency 5. In an AM receiver, which component is responsible for separating the modulating signal from the received AM signal? a) Mixer b) Modulator c) Demodulator dy Oscillator 6. What is the main purpose of a bandpass filter in an AM receiver? a) Amplify the received signal bi Separate the camer frequency c) Eliminate noise from the signal d) Select the desired frequency range 7 Which of the following modulation techniques is used in standard AM broadcasting? a) DSB-SC b) VSB c) SSB d) DSB-LC 8. A 100MHz carrier is frequency modulated by 10 kHz wave For a frequency deviation of 500 kHz, the modulation index of the FM signal is a) 50, b) 100, c) 200, d) 20 9 The purpose of the Nyquist theorem in PCM is to determine? a) the maximum bit rate for a given bandwidth b) the minimum sampling rate for accurate signal reconstruction c) the modulation index for a given carrer frequency d) the bandwidth of the modulated signal 10. In FSK modulation, the number of discrete frequencies used to represent digital data is typically a) 2 b) 4 c) 8 d) 16
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