Name the five elements in a block diagram of a communications system. A. PCM D. Reactance bipolar transistor, 7. 9. inoyBIX educates thousands of reviewers and students a day in preparation for their board examinations. Subscribe to our mailing list and get interesting stuff and updates to your email inbox. 1. C. a cathode follower stage Answer : Wireless communication is the transfer of information between two or more points that are not connected by any physical medium.Wireless communications can be via: Radio communication. Mathematically, a spectrum is represented by a ____________________ series. 3. B. linear devices This Data Communication and Networking – Network Management: SNMP multiple choice Questions and Answers (MCQ) PDF covers the below lists of topics. What do you understand by Communication. B. PWM A telephone channel requires a bandwidth of about, 23. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam. Noise in a communication system originates in: 18. C. suppress carrier signal in order to create a single-sideband or double sideband The bandwidth required is, A. 6. A. C. clockwise or anticlockwise depending on frequency of data stored C. Pulse Amplitude Modulation Practice Multiple Choice Questions for Data Communication and Networking of computer awareness for SSC and banking exams. The input to an amplifier has a signal-to-noise ratio of 100 dB and an output signal-to-noise ratio of 80 dB. Explore the latest questions and answers in Communication Technology, and find Communication Technology experts. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Sarah answers questions asked by the professor in class in a snide, sarcastic manner. Radio signals first were sent across the Atlantic in the year ____________________. 18. A complete communication system must include: b. a transmitter, a receiver, and a channel, c. a transmitter, a receiver, and a spectrum analyzer, d. a multiplexer, a demultiplexer, and a channel. C. voltage with constant frequency, phase or amplitude Fading of the received radio signals in a mobile communication environment occurs because of ..... A) Direct propagation B. connect a booster B. speech voltage to be transmitted 8. B. frequency diversity This is the Multiple Choice Questions in Chapter 1: Introduction to Communication Systems from the book Electronic Communication Systems by Roy Blake. For attenuation of high frequencies we should use. VHF stands for the ____________________ frequency band. B. So called “1/f” noise is also called: 21. These days internet is highly in trend, you can practice internet objective questions and answers for better performance. Likewise, thermal noise has equal power density over a wide range of frequencies. A cordless telephone using separate frequencies for transmission in base and portable units is known as, A. duplex arrangement Most Asked Technical Basic CIVIL | Mechanical | CSE | EEE | ECE | IT | Chemical | Medical MBBS Jobs Online Quiz Tests for Freshers Experienced. If sampling is done at the rate of 10 kHz. 6. Also provides professionals with materials for their lectures and practice exams. Which of the following is an indirect way of generating FM? The part, or parts, of a sinusoidal carrier that can be modulated are: c. its amplitude, frequency, and direction, d. its amplitude, frequency, and phase angle. Page 1. D. band stop filter. B. a high gain D.C. amplifier The output of the samples so obtained would be, A. correlated D. none of the above, A. a double-tuned amplifier Choose the letter of the best answer in each questions. Phase Analogue Modulation Assertion (A): In FM the frequency of the carrier is varied by the modulating voltage. If you are looking for a reviewer in Communications Engineering this will definitely help. 2. For a low level AM system, the amplifiers modulated stage must be, A. linear devices The equipment used to show signals in the frequency domain is the _________________________. 500 ohm Quiz & question bank based on university syllabus covering all lessons, lecture notes, concepts & formula from textbooks. 10. D. voltage for which frequency, phase or amplitude is varied, A. use a longer transmission line D. Remains unchanged, 56. What is the purpose of peak clipper circuits in radio transmitters? C. A is correct but R is wrong Which one of the following is analog? When two or more signals share a common channel, it is called: c. the distance a wave travels in one period, d. how far the signal can travel without distortion, a. creation of harmonics of baseband frequencies, b. baseband frequencies “mixing” with each other, c. shift in phase relationships between baseband frequencies. ANSWER: (a) 1 bit/ symbol. D. amplitude of distant sidebands first increases, then decreases, 40. 8. Find the total NF for the pair. B. produce 100% modulation In an open loop control system. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. If in a broadcasting studio, a 1000 kHz carrier is modulated by an audio signal of frequency range 100-5000 kHz, the width of channel is __________ kHz. D. 100 ohm, A. amplifiers low frequency signals B. prevent over modulation C. amplitude of distant sidebands remains constant A three stage telephone switching structure is to have 128 input and 128 output terminals. C. serrations B. medium frequency D. single tone modulation, 11. What Is Crosstalk? One of the advantages of base modulation over collector modulation of a transistor class C amplifier is, A. improved efficiency If you are looking for a reviewer in Communications Engineering this will definitely help. In practical commercial FM system, channel bandwidth is, A. This article will also help you to crack various competitive examinations. Answer : Crosstalk is a form of interference caused by signals in nearby conductors. Thermal noise is caused by the random motions of ____________________ in a conductor. If you have any Questions regarding this free Computer Science tutorials ,Short Questions and Answers,Multiple choice Questions And Answers-MCQ sets,Online Test/Quiz,Short Study Notes don’t hesitate to contact us via Facebook,or through our website.Email us @ [email protected] We love to get feedback and we will do our best to make you happy. The UHF band starts at ____________________ MHz. This post covers marketing multiple choice questions with answers and explanation. If you have 100 mV of signal and 10 mV of noise, both across the same 100-ohm load, what is the signal-to-noise ratio in dB? B. quantising noise can be overcome by companding Practice for BBA or MBA exams using these MCQ. 4. Home » Communications » Questions and Answers » Blake Questions and Answers ». A. D. resistance, 3. The telephone was invented in the year ____________________. 6. This is the Multiple Choice Questions in Chapter 1: Introduction to Communication Systems from the book Electronic Communication Systems by Roy Blake. Find NF, both in dB and as a ratio. The theory of radio waves was originated by: 2. a. C. JK flip-flop D. 200 and 200. C. class C amplifiers Management provides you all type of quantitative and competitive aptitude mcq questions with easy and logical explanations. Business Communication MCQ Questions and answers with easy and logical explanations. 29. 6. 7. All the Multiple Choice Question and Answer (MCQs) have been compiled from the books of Data Communication and Networking by the well known author behrouz A forouzan. 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