C. To increase bandwidth C. JK flip-flop The disadvantage of FM over AM is that, A. high output power is needed A. Receiver. D. fundamental and subharmonic sine waves, 27. 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. The equation for the noise current is very similar to the equation for thermal noise voltage. C. is more than that of dipole This can be avoided by using, A. space diversity Phase Analogue Modulation MULTIPLE CHOICE QUESTIONS – WIRELESS COMMUNICATION 1. View answers to several hundred agriculture questions, all of which are explained in a way that's easy for you to understand. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. 500 ohm D. Remains unchanged, 56. As per Shannon-Hartley theorem, a noise less Gaussian channel has, A. zero capacity Crosstalk can also occur in radios, televisions, networking equipment, and even electric guitars. Effective communication is important all the time in every situation … Which of the following statements is correct? C. eliminates any change in amplitude of received FM signals It is found that a ship to ship communication suffers from fading. 19. 3. C. band pass filter Correct answer: (C) oral communication. Business Communication multiple choice questions and answers on Business Communication MCQ questions quiz on Business Communication objective questions. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then, A. amplitude of distant sidebands decreases C. small capacity 8. D. the lower modulating power requirement. The theory of radio waves was originated by: 2. 16. D. suffers from the disadvantage of its incompatibly with TDM. Business Communication MCQ is important for exams like MAT, CAT, CA, CS, CMA, CPA, CFA, UPSC, Banking and other Management department exam. B. B. produce 100% modulation Skip distance depends on time of day and angle of incidence. 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. C. a cathode follower stage 30. Signal-to-Noise ratio is calculated as: a. signal voltage divided by noise voltage, c. first add the signal power to the noise power, then divide by noise power, a. how much noise is in a communications system, c. how much noise an amplifier adds to a signal. Bear in your mind that, failures, emergencies or critical points about a project must be communicated face to face. 3. In ____________________, multiple signal streams take turns using the channel. Which of the following does not cause losses in optical fiber cables? A. The modulation index of an FM is changed from 0 to 1. Multiple choice Questions on Business Communication. In practical commercial FM system, channel bandwidth is, A. 55. Which of the following is a digital modulation technique? Commercial Frequency deviation of FM is, 12. 35 kHz A radio signal’s ____________________ is the distance it travels in one cycle of the carrier. The values of initial (without frequency translation) and final (after frequency translation) fractional change in frequency from one band edge to the other are, A. This article will also help you to crack various competitive examinations. C. noise is very high for high frequency The more information per second you send, the ____________________ the bandwidth required. C. 1.07 MHz Practice for BBA or MBA exams using these MCQ. Leak type bias is used in plate modulated class C amplifier to, A. increase the bandwidth In ____________________, you split the bandwidth of a channel into sub-channels to carry multiple signals. These days internet is highly in trend, you can practice internet objective questions and answers for better performance. C. Micro bending An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. In free space, radio signals travel at approximately ____________________ meters per second. C. 10 kHz For attenuation of high frequencies we should use. 9. D. none of the above, A. Laser beam for both recording and playback Answer : Crosstalk is a form of interference caused by signals in nearby conductors. 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. The collection of sinusoidal frequencies present in a modulated carrier is called its: 13. Two cascaded amplifiers each have a noise figure of 5 and a gain of 10. Name the five elements in a block diagram of a communications system. B. two tone modulation C. Pulse Amplitude Modulation To prevent over modulation Also provides professionals with materials for their lectures and practice exams. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam. B. Laser beam for recording and video head for playback B. 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. 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. 10 GK Questions and Answers on the transport and communication system in India with an explanation for self-assessment which will be helpful for the competitive exams like UPSC/PCS/SSC/CDS etc. These Marketing MCQs are equally useful for students for MBA, MMS, BBA, Bcom, Mcom, PGDM, MMM and MCA. A. shunt capacitance. D. resistance, 3. B. harmonic devices C. change the antenna orientation of location D. Schmitt trigger, A. filter method Likewise, thermal noise has equal power density over a wide range of frequencies. For telegraphy the most commonly used modulation system is, A. FSK D. … 8. 9. B. better linearity (b) Output is dependent … 42. Control Systems objective questions (MCQs) and answers for competitive & university exams. Both A and R are correct and R is correct explanation of A An audio signal (say from 50 Hz to 10000 Hz) is frequency translated by a carrier having a frequency of 106 Hz. B. amplitude of distant sidebands increases Which of the following is an indirect way of generating FM? The most common example is hearing an unwanted conversation on the telephone. Both A and R are correct but R is not correct explanation of A For a low level AM system, the amplifiers modulated stage must be, A. linear devices 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. Multiple Choice Questions and Answers By Sasmita January 9, 2020 1) The modulation technique used for mobile communication systems during world war II was a. Why and when do we need it? Explore the latest questions and answers in Communication Technology, and find Communication Technology experts. Help me go forward with the same spirit. D. directional antenna. (adsbygoogle = window.adsbygoogle || []).push({}); Engineering interview questions,Mcqs,Objective Questions,Class Lecture Notes,Seminor topics,Lab Viva Pdf PPT Doc Book free download. C. class C amplifiers 18. C. broad band antenna C. 200 and 100.1 So called “1/f” noise is also called: 21. D. band stop filter. C. reflected colour for opaque object and wavelength transmitted through it for transparent objects D. neither (a) nor (b), 2. List of 200+ marketing objective type or multiple choice (MCQ) question and answers! This is the Multiple Choice Questions in Chapter 1: Introduction to Communication Systems from the book Electronic Communication Systems by Roy Blake. B. half duplex arrangement C. high power output per transistor B. statistically independent B. C. uncorrelated D. Differential PCM, 31. A. Armstrong modulator How would you control the amount of noise generated? C. amplitude of distant sidebands remains constant Multiple choice questions with answers Organizational Behaviour & Management (Hogeschool Rotterdam) Multiple choice questions with answers Organizational Behaviour & Management (Hogeschool Rotterdam ... Their most important communication is written, including reports and e-mail. Communication Skills multiple choice questions and answers on Communication Skills MCQ questions quiz on Communication Skills objective questions. Find the total NF for the pair. D. harmonic devices, 38. C. voltage with constant frequency, phase or amplitude B. (a) Output is independent of control input. B. cheaper D. twist the transmission line, 18. What do you understand by Communication. C. Gets increased by 50 percent This Data Communication and Networking – Network Management: SNMP multiple choice Questions and Answers (MCQ) PDF covers the below lists of topics. 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