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Exam (elaborations)

Principles of Electronic Communication Systems 4th Edition by Frenzel - Test Bank

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1. Gain means attenuation. FALSE 2. TRUE 3. FALSE 4. TRUE Blooms: 3. Apply Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications Circuits that introduce attenuation have a gain that is less than 1. The gain or loss of a circuit is usually expressed in volts (V). When a decibel value is computed by comparing a power value to 1 mW, the result is a value called the dBm. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications 2-1 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. 5. Both coils and capacitors offer an opposition to alternating current flow known as resistance. FALSE 6. TRUE Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications The basic unit of inductance is the henry. 7. frequencies is called skin effect. TRUE 8. TRUE The tendency of electrons flowing in a conductor to flow near and on the outer surface of a conductor at very high Resonance in a series tuned circuit is the point at which XL equals XC. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 2-2 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. 9. The bandwidth of a resonant circuit defines its selectivity. TRUE 10. The bandwidth of a circuit is directly proportional to Q. FALSE 11. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications A frequency-selective circuit designed to pass some frequencies and reject others is a(n) A. tank circuit B. filter C. harmonic circuit D. frequency doubler 2-3 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 12.A circuit that rejects or stops frequencies over a narrow range but allows frequencies above and below to pass is the A. high-pass filter B. bandpass filter C. D. all-pass filter band-reject filter 13. A. B. roll-off loss C. notch loss D. impedance The signal attenuation in the passband of a filter is called insertion loss 2-4 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 14. Which of the following is also known as a notch filter? A. low-pass B. high-pass C. bandpass D. band-reject The rate of change of amplitude with frequency in a filter is the Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 15. A. shape factor B. roll-off C. insertion loss D. attenuation 2-5 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 16.Which of the following, also known as a Thomson filter, provides the desired frequency response but has a constant time delay in the passband? A. Butterworth B. Chebyshev C. Cauer D. Bessel Which of the following is not an advantage of an active filter? Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 17. A. gain B. easy to tune C. D. isolation use of inductors 2-6 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 18. Which of the following filter is used to supply signals on exact frequencies with good stability? A. RC low-pass B. Bessel C. crystal D. LC notch 19.Which of the following filter is very small and inexpensive and widely used in communication transmitters and receivers? A. Bessel B. Butterworth C. LC D. ceramic 2-7 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 20.Which of the following is a fixed tuned bandpass filter that is designed to provide the exact selectivity required by a given application? A. Bessel B. C. switched capacitor filters D. ceramic surface acoustic wave 21.The primary advantage of SCFs is that they provide a way to make tuned or selective circuits in an IC without the use of discrete inductors, capacitors, or resistors. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 22.One characteristic of the commutating filter is that it is sensitive to the harmonics of the center frequency for which it is designed. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 23.A non-sine wave approach used to determine the characteristics and performance of any communication circuit or system is Fourier analysis. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.04 Fourier Theory Subtopic: Fourier Theory Topic: Electronic Fundamentals for Communications 2-8 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.03 Filters Subtopic: Filters Topic: Electronic Fundamentals for Communications 24. Most signals and waveforms discussed and analyzed are expressed in the time domain. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.04 Fourier Theory Subtopic: Fourier Theory Topic: Electronic Fundamentals for Communications 25. The bandwidth of a rectangular wave is equal to 0.35 divided by rise time. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Hard Section: 02.04 Fourier Theory Subtopic: Fourier Theory Topic: Electronic Fundamentals for Communications 26.When two or more stages of amplification are cascaded, the overall gain of the combination is the product of the individual circuit gains. 27. Attenuation refers to a loss introduced by a circuit or component. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications 28.When gain is converted to decibels, the overall gain of an electronic circuit can be computed by adding the individual gains expressed in decibels. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications 29. When a decibel value is computed by comparing a power value to 1 mW, the result is a value called the dBm. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.01 Gain, Attenuation, and Decibels Subtopic: Gain, Attenuation, and Decibels Topic: Electronic Fundamentals for Communications 2-9 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. 30. Circuits made up of inductors and capacitors that resonate at specific frequencies are called tuned circuits. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 31. The reactance of a capacitor is inversely proportional to the value of capacitance and operating frequency. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 32. A(n) inductor also called a coil or choke is simply a winding of multiple turns of wire. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 33.An important characteristic of an inductor is the ratio of inductive power to resistive power referred to as its quality factor. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Medium Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 34. When the inductive and capacitive reactances are equal, resonance occurs. Blooms: 2. Understand Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 35. Thebandwidthofatunedcircuitisdefinedasthedifferencebetweenitsupperandlowercutofffrequencies. Blooms: 1. Remember Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Section: 02.02 Tuned Circuits Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications 2-10 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Category Blooms: 1. Remember Blooms: 2. Understand Blooms: 3. Apply Chapter: 02 Electronic Fundamentals for Communications Difficulty: Easy Difficulty: Hard Difficulty: Medium Section: 02.01 Gain, Attenuation, and Decibels Section: 02.02 Tuned Circuits Section: 02.03 Filters Section: 02.04 Fourier Theory Subtopic: Filters Subtopic: Fourier Theory Subtopic: Gain, Attenuation, and Decibels Subtopic: Tuned Circuits Topic: Electronic Fundamentals for Communications # of Questions 1. with the modulating information signal. FALSE There are only a few modulator circuits developed that will cause the carrier amplitude to be varied in accordance 2. plus 1, AM will be produced. TRUE If the gain of an amplifier or the attenuation of a voltage divider is varied in accordance with a modulating signal Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits 3. component or circuit. TRUE 4. TRUE One way to generate the product of the carrier and modulating signal is to apply both signals to a linear Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits A nonlinear circuit is one in which the current is not directly proportional to the voltage. Blooms: 4. Analyze Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits 4-1 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits 5. intermodulation products. TRUE 6. TRUE 7. FALSE 8. TRUE Diodes and transistors whose function is not a pure square-law function produce harmonics known as High-level modulators produce AM at high power levels, usually in the final amplifier stage of a transmitter. One of the more complicated high-level amplitude modulators is the diode modulator. Blooms: 1. Remember Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Topic: Amplitude Modulator and Demodulator Circuits Chapter: 04 Amplitude Topic: Amplitude Blooms: 2. Understand Modulator and Demodulator Circuits Difficulty: Medium Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Modulator and Demodulator Circuits Blooms: 2. Understand Modulator and Demodulator Circuits Difficulty: Medium Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Modulator and Demodulator Circuits Blooms: 2. Understand Modulator and Demodulator Circuits Difficulty: Hard Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Modulator and Demodulator Circuits A transistor modulator is used because the transistor circuit provides gain. Chapter: 04 Amplitude Topic: Amplitude 4-2 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Chapter: 04 Amplitude Topic: Amplitude 9. PIN diodes are a special type of germanium diode for use at frequencies below approximately 100 MHz. FALSE 10. A differential amplifier modulator makes an excellent amplitude modulator. TRUE Chapter: 04 Amplitude Blooms: 2. Understand Modulator and Demodulator Circuits Difficulty: Medium Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Modulator and Demodulator Circuits Blooms: 2. Understand Modulator and Demodulator Circuits Difficulty: Medium Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Modulator and Demodulator Circuits Topic: Amplitude 11. The outputs of a differential amplifier taken from collectors to ground are A. in phase B. 45° out of phase C. 90° out of phase D. 180° out of phase 4-3 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Chapter: 04 Amplitude Topic: Amplitude Chapter: 04 Amplitude Topic: Amplitude Blooms: 2. Understand Modulator and Demodulator Circuits Difficulty: Easy Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Modulator and Demodulator Circuits 12. Which of the following is not an advantage of using a differential amplifier as an amplitude modulator? A. high gain B. C. good linearity D. can be modulated 100 percent 13. In high-level AM, the modulator varies the voltage and power in the excellent selectivity A. carrier oscillator B. audio amplifier C. intermediate RF amplifier D. final RF amplifier 4-4 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Topic: Amplitude Modulator and Demodulator Circuits Blooms: 4. Analyze Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Topic: Amplitude Modulator and Demodulator Circuits 14. If a class C amplifier has an input of 1000 W, the modulator must be able to deliver A. 100 W B. 200 W C. 400 W D. 500 W 15. Circuits that accept modulated signals and recover the original modulating information are called A. modulators B. detectors C. nonlinear circuits D. balanced filters 4-5 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.03 Amplitude Demodulators Subtopic: Amplitude Demodulators Topic: Amplitude Modulator and Demodulator Circuits Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.03 Amplitude Demodulators Subtopic: Amplitude Demodulators Topic: Amplitude Modulator and Demodulator Circuits 16. The crystal component of the crystal radio receivers that were widely used in the past is the A. capacitor B. transistor C. diode D. integrated circuit 4-6 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.03 Amplitude Demodulators Subtopic: Amplitude Demodulators Topic: Amplitude Modulator and Demodulator Circuits 17. How is the noninverted AM output of positive half-cycles in the circuit shown in Fig. 4-21 fed to the load? A. B. clock turns on switch B C. inverting amp turns on D. noninverting amp turns off clock turns on switch A 4-7 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 4. Analyze Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.03 Amplitude Demodulators Subtopic: Amplitude Demodulators Topic: Amplitude Modulator and Demodulator Circuits 18. What is the result (output) for the circuit shown in Fig. 4-21? A. half-wave rectification of the signal B. C. dc D. ac full-wave rectification of the signal 19.A circuit that generates a DSB signal, suppresses the carrier and leaves only sum and difference frequencies at the output is the A. unbalanced detector B. C. carrier recovery circuit D. demodulator balanced modulator 4-8 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.04 Balanced Modulators Subtopic: Balanced Modulators Topic: Amplitude Modulator and Demodulator Circuits Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.04 Balanced Modulators Subtopic: Balanced Modulators Topic: Amplitude Modulator and Demodulator Circuits 20. In DSB and SSB, the carrier that was suppressed at the DSB and SSB transmitter A. B. must be transmitted after the signal was received C. must be replaced by a pilot carrier D. must be lower than 1500 kHz must be reinserted at the receiver 21.The 1496/1596 IC balanced modulator can work at carrier frequencies up to approximately 100 or one-hundred MHz. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.04 Balanced Modulators Subtopic: Balanced Modulators Topic: Amplitude Modulator and Demodulator Circuits 22. The 1496 IC is one of the most versatile circuits available for communication applications. Blooms: 1. Remember Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.04 Balanced Modulators Subtopic: Balanced Modulators Topic: Amplitude Modulator and Demodulator Circuits 23. Analog multipliers are often used to generate DSB signals. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.04 Balanced Modulators Subtopic: Balanced Modulators Topic: Amplitude Modulator and Demodulator Circuits Blooms: 1. Remember Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.04 Balanced Modulators Subtopic: Balanced Modulators Topic: Amplitude Modulator and Demodulator Circuits 4-9 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. 24. In large-scale integrated circuits in which complete receivers are put on a single silicon chip, the circuitry is likely to be implemented with MOSFETs. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.05 SSB Circuits Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits 25. The simplest and most widely used method of generating SSB signals is the filter method. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.05 SSB Circuits Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits 26. OneSSBtransmittersidebandselectionmethodistoprovidetwocarrieroscillatorfrequencies. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.05 SSB Circuits Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits 27.The phasing method of SSB generation uses a phase-shift technique that causes one of the sidebands to be canceled out. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.05 SSB Circuits Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits 28.A phase shifter is usually an RC network that causes the output to either lead or lag the input by 90 or ninety degrees. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.05 SSB Circuits Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits 29.The output of a phasing detector is a low-level SSB and must be applied to a linear RF amplifier before being applied to the transmitting antenna. Blooms: 1. Remember Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.05 SSB Circuits Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits 4-10 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. 30.The balanced modulator is called a(n) product detector because it is used to recover the modulating signal rather than generate a carrier that will transmit it. Blooms: 1. Remember Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits 31. The modulation index is the ratio of the modulating signal amplitude to the carrier amplitude. Blooms: 1. Remember Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits 32. To produce AM, a carrier and modulating signals are added and applied to a nonlinear device. 33. Modulationisa(n)multiplicationprocess. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Medium Section: 04.01 Basic Principles of Amplitude Modulation Subtopic: Basic Principles of Amplitude Modulation Topic: Amplitude Modulator and Demodulator Circuits 34. A(n) differential amplifier modulator makes an excellent amplitude modulator. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Hard Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Topic: Amplitude Modulator and Demodulator Circuits 35. Amajordisadvantageofcollectormodulatorsistheneedforamodulationtransformer. Blooms: 2. Understand Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Section: 04.02 Amplitude Modulators Subtopic: Amplitude Modulators Topic: Amplitude Modulator and Demodulator Circuits 4-11 Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. Category Blooms: 1. Remember Blooms: 2. Understand Blooms: 4. Analyze Chapter: 04 Amplitude Modulator and Demodulator Circuits Difficulty: Easy Difficulty: Hard Difficulty: Medium Section: 04.01 Basic Principles of Amplitude Modulation Section: 04.02 Amplitude Modulators Section: 04.03 Amplitude Demodulators Section: 04.04 Balanced Modulators Section: 04.05 SSB Circuits Subtopic: Amplitude Demodulators Subtopic: Amplitude Modulators Subtopic: Balanced Modulators Subtopic: Basic Principles of Amplitude Modulation Subtopic: SSB Circuits Topic: Amplitude Modulator and Demodulator Circuits # of Questions 6 Principles of Electronic Communication Systems Answer Key, Principles of Electronic Communication Systems PDF, Principles of Electronic Communication Systems, Principles of Electronic Communication Systems 5th Edition, Principles of Electronics Quizlet, Basic Electronic Principles, Principles of Electronic Communication, Electronic Communications Disclosure, Basic Principles of Power Electronics PDF, RF Principles and Applications, Principles of Electronic Communication Systems PPT, Electronic Principles, 2 Examples of Electronic Banking Services, 4 Principles of Verbal Communication, 5 Principles of Communication Quizlet, 6 Principles of Communication, 7 Principles of Business Communication, What are the 9 Principles of Ethical Communication, 9 Elements of the Communication Process.

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,1.
Communication is the process of exchanging information.




TRUE

Blooms: 1. Remember
Chapter: 01 Introduction to Electronic Communication
Difficulty: Easy
Section: 01.01 The Significance of Human Communication
Subtopic: The Significance of Human Communication
Topic: Introduction to Electronic Communication

2
. All electronic communication systems have a transmitter, a communication channel or medium, and a receiver.




TRUE

Blooms: 1. Remember
Chapter: 01 Introduction to Electronic Communication
Difficulty: Easy
Section: 01.02 Communication Systems
Subtopic: Communication Systems
Topic: Introduction to Electronic Communication

3
. A transmitter is a collection of electronic components and circuits that accepts the transmitted message from the
channel and converts it to a form understandable to humans.




FALSE

Blooms: 2. Understand
Chapter: 01 Introduction to Electronic Communication
Difficulty: Easy
Section: 01.02 Communication Systems
Subtopic: Communication Systems
Topic: Introduction to Electronic Communication

4
. Optical media communication channels are only used for video analog signals.




FALSE
Blooms: 2. Understand
Chapter: 01 Introduction to Electronic Communication
Difficulty: Easy
Section: 01.02 Communication Systems
Subtopic: Communication Systems
Topic: Introduction to Electronic Communication




1-1
Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of
McGraw-Hill Education.

,5.
Examples of transceivers include telephones, fax machines, cellular telephones, and computer modems.




TRUE

Blooms: 2. Understand
Chapter: 01 Introduction to Electronic Communication
Difficulty: Easy
Section: 01.02 Communication Systems
Subtopic: Communication Systems
Topic: Introduction to Electronic Communication

6
. Simplex communication refers to a two-way transmission type system.




FALSE

Blooms: 3. Analyze
Chapter: 01 Introduction to Electronic Communication
Difficulty: Easy
Section: 01.03 Types of Electronic Communication
Subtopic: Types of Electronic Communication
Topic: Introduction to Electronic Communication

7
. An analog signal is a smoothly and continuously varying voltage or current.




TRUE

Blooms: 1. Remember
Chapter: 01 Introduction to Electronic Communication
Difficulty: Medium
Section: 01.03 Types of Electronic Communication
Subtopic: Types of Electronic Communication
Topic: Introduction to Electronic Communication

8
. Multiplexing makes the information signal more compatible with the medium.




FALSE
Blooms: 2. Understand
Chapter: 01 Introduction to Electronic Communication
Difficulty: Medium
Section: 01.04 Modulation and Multiplexing
Subtopic: Modulation and Multiplexing
Topic: Introduction to Electronic Communication




1-2
Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of
McGraw-Hill Education.

, 9.
Modulation is the process of having a baseband voice, video, or digital signal modify another, higher-frequency
signal, the carrier.




TRUE

Blooms: 3. Analyze
Chapter: 01 Introduction to Electronic Communication
Difficulty: Hard
Section: 01.04 Modulation and Multiplexing
Subtopic: Modulation and Multiplexing
Topic: Introduction to Electronic Communication

10.
A modem can be used to translate data from digital to analog and back again.




TRUE

Blooms: 3. Analyze
Chapter: 01 Introduction to Electronic Communication
Difficulty: Hard
Section: 01.04 Modulation and Multiplexing
Subtopic: Modulation and Multiplexing
Topic: Introduction to Electronic Communication

11
. Multiplexing is the process of allowing two or more signals to share the same medium or channel.




TRUE

Blooms: 2. Understand
Chapter: 01 Introduction to Electronic Communication
Difficulty: Hard
Section: 01.04 Modulation and Multiplexing
Subtopic: Modulation and Multiplexing
Topic: Introduction to Electronic Communication

12.
The range of electromagnetic signals encompassing all frequencies is referred to as the optical spectrum.




FALSE
Blooms: 1. Remember
Chapter: 01 Introduction to Electronic Communication
Difficulty: Medium
Section: 01.05 The Electromagnetic Spectrum
Subtopic: The Electromagnetic Spectrum
Topic: Introduction to Electronic Communication




1-3
Copyright © 2016 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of
McGraw-Hill Education.

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