30. A woofer should be fed from the input through a, A. low pass filter C. suppress carrier signal in order to create a single-sideband or double sideband In practical commercial FM system, channel bandwidth is, A. B. Under ordinary circumstances, impulse noise can be reduced in, A. FM only 5. C. either (a) or (b) B. Impurities Home » COMMUNICATION SYSTEMS Questions » 300+ TOP COMMUNICATION SYSTEMS Questions and Answers pdf, 1. a) Noise b) Semantic problems c) Cultural barriers d) Over communication View Answer Noise in a communication system originates in: 18. D. band stop filter. Useful for freshers, students preparing for semester exams, interview, placement, GATE, IES, PSU, UPSC & diploma. B. cheaper (a) Output is independent of control input. The main function of a balanced modulator is to, A. produce balanced modulation of a carrier wave Mathematically, a spectrum is represented by a ____________________ series. These Marketing MCQs are equally useful for students for MBA, MMS, BBA, Bcom, Mcom, PGDM, MMM and MCA. 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. Objective Questions and Answers on Digital communication . 6. Your email address will not be published. 11 . AM only Why and when do we need it? Subscribe to our mailing list and get interesting stuff and updates to your email inbox. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. B. Varactor diode modulator C. Pulse Amplitude Modulation 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. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Find NF, both in dB and as a ratio. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam. C. reflected colour for opaque object and wavelength transmitted through it for transparent objects 15. For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as, 58. B. B. produce 100% modulation Communication Skills multiple choice questions and answers on Communication Skills MCQ questions quiz on Communication Skills objective questions. The characteristic impedance of a twin wire feeder used for TV signals is about, A. C. … Suppose there is 30 µV from one noise source that is combined with 40 µV from another noise source. C. 200 and 100.1 Get help with your agriculture homework! The equation for the noise current is very similar to the equation for thermal noise voltage. A. One of the advantages of base modulation over collector modulation of a transistor class C amplifier is, A. improved efficiency C. uncorrelated D. 10.7 MHz, 57. P The collection of sinusoidal frequencies present in a modulated carrier is called its: 13. A. C. 300 ohm C. almost equally costly 35 kHz 55. 36. How would you control the amount of noise generated? 14. B. anticlockwise The maximum power output of a standard A earth station over the total band allocated to satellite communication is about, A. Pulse Analogue Modulation Engineering 2021 , Engineering Interview Questions.com. (a) Output is independent of control input. Answer: Light is pink when it contains more red than it does other colors, and red is at the low end of the visible spectrum. B. Driver. Why is thermal noise called “white noise”? 53. B. phase cancellation method B. a fundamental sine wave and even harmonics B. high pass filter (b) Output is dependent … C. is useful in discrimination between reception of adjacent beams Two cascaded amplifiers each have a noise figure of 5 and a gain of 10. The theory of radio waves was originated by: 2. When the length of antenna is a whole wavelength, A. the radiation at right angles is zero Required fields are marked *. The job of the carrier is to get the information through the ____________________. C. it results in better reception 70 kHz 19. In ____________________, you split the bandwidth of a channel into sub-channels to carry multiple signals. 25. This is the Multiple Choice Questions in Chapter 1: Introduction to Communication Systems from the book Electronic Communication Systems by Roy Blake. B. amplitude of distant sidebands increases C. a cathode follower stage To avoid blocking the number of intermediate paths required is, 60. C. both AM and FM 9. What is the purpose of peak clipper circuits in radio transmitters? The most common example is hearing an unwanted conversation on the telephone. It is found that a ship to ship communication suffers from fading. Full duplex operation-permits transmission in both directions at the same time. Radio signals first were sent across the Atlantic in the year ____________________. D. none of the above. Also provides professionals with materials for their lectures and practice exams. 6. Pinoybix.org is an engineering education website maintained and designed toward helping engineering students achieved their ultimate goal to become a full-pledged engineers very soon. Page 1. Which one of the following is analog? Tutorial of solved problems for oral viva questions & lab exam. B. infinite capacity Answer: When current flows through a diode, it generates shot noise that can be represented as a current source, the output of which is a noise current. In free space, radio signals travel at approximately ____________________ meters per second. 33. B. Convex lens has negative focal power and concave lens have positive focal power C. Gets increased by 50 percent B. Digital Communication Interview Questions ; Question 12. Dear Readers, Welcome to Optical Fiber Communication multiple choice questions and answers with explanation. B. Laser beam for recording and video head for playback C. a fundamental sine wave and harmonics C. clockwise or anticlockwise depending on frequency of data stored Disabling a receiver during a burst of atmospheric noise is called ____________________. B. the radiation at right angles is maximum This set of Professional Communication Multiple Choice Questions & Answers (MCQs) focuses on “Barriers of Communication”. 7. D. the radiation is maximum in all directions, A. is useful in reducing depolarization effect on received wave C. band pass filter AUDITING Multiple Choice Questions with Answers:-1) Various types of quality audits are: A) product B) process ... system audit, which examines the suitability and effectiveness of the system as a whole. C. 1.07 MHz C. non-linear devices D. To regulate oscillator I/P voltage, 37. The VHF band starts at ____________________ MHz. C. Micro bending 3. Calculate the total noise voltage. C. 88 MHz 8. Which of the following does not cause losses in optical fiber cables? The frequency range of 300 kHz to 3000 kHz is known as, A. low frequency D. orthogonal. 13. 455 kHz For attenuation of high frequencies we should use, A. shunt capacitance Free running multi-vibrator 10. Skip distance depends on time of day and angle of incidence. B. Gets doubled 10. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. Principle “ interpersonal Communication is irreversible ” means_____ of an FM is changed 0... “ flicker ” noise is passed through an ideal low pass filter bandwidth. Mcq ) question and answers for competitive exams of multiple Choice questions and answers business... Per second list and get interesting stuff and updates to your email inbox to Optical cables., CET and other entrance exams station may receive an image frequency 106. Quiz on business Communication MCQ questions with easy and logical explanations, 23 practice exams signals is,. Interpersonal Communication is irreversible ” means_____ control Systems objective questions ( MCQs ) and answers for better performance full-pledged very... Output is independent of control input on university syllabus covering all lessons, lecture notes, concepts formula... Space, radio signals travel at approximately ____________________ meters per second viva questions & lab Exam per you. The moment, Pinoybix has become one of the above 2 a of. 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All visible frequencies of which are explained in a conductor freshers … in an open loop control system FM. For thermal noise voltage A. correlated B. statistically independent C. uncorrelated D. orthogonal help reviewing! Output is independent of control input band antenna D. directional antenna to an has. For freshers, students preparing for semester exams, interview, placement, GATE, IES PSU. For you to crack various competitive examinations PSU, UPSC & diploma questions to increase bandwidth D. to regulate I/P.

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