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The center frequency is 200 KHz. Each division is equal to 160/4 = 40 KHz. The next frequency is about 110 KHz. Modulation frequency = 215 – 200 = 15 KHz.Points Received:10 of 10Comments:Question 3.Question :(TCO 4) Using the Bessel chart below, determine how many significant sideband pairs a transmission with a modulation factor of 4.0 would generate. Student Answer:1
45710Instructor Explanation:The Bessel Function table shows seven(J7) significant pairs of sidebands corresponding to a modulation factor of 4.Points Received:5 of 5Comments:Question 4.Question :(TCO 4) An FM transmitter has a carrier frequency of 150MHz, a deviation of +/-15KHz and audio modulation frequency of 3KHz. Calculate the modulation factor?Student Answer:371015None of the above.Explanation:Modulation factor is given by: Deviation in carrier frequency / Modulation frequencyModulation Factor = 15 KHz / 3 KHz = 5.Instructor Points Received:5 of 5Comments:Question 5.Question :Amplitude modulation is a process in which peak amplitude of the carrier signal varies in direct proportion to amplitude variations in the modulation signal (baseband).StudentAnswer:TrueFalsePoints Received:0 of 10
Comments:Question 6.Question :Frequency modulation is a process in which frequency of the carrier signal varies in direct proportion to frequency variationsin the modulation signalStudentAnswer:TrueFalse (proportion toamplitude)Points Received:0 of 10Comments:* Times are displayed in (GMT-07:00) Mountain Time (US & Canada)Grading SummaryThese are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below.Date Taken:6/3/2016Time Spent:07 min , 28 secsPoints Received:45 / 50 (90%)Question Type:# Of Questions:# Correct:True/False21Multiple Choice44Grade Details - All QuestionsQuestion 1.Question :(TCO 5) Referring to the PLL block diagram below, which two signals are in sync when the PLL is "locked"? Student Answer:W and XX and YY and ZW and ZInstructor Explanation:W is the input signal to the phase comparator and Z is the output of. The VCO free running frequency Z is set equal to the input frequency W.Points Received:10 of 10
Comments:Question 2.Question :(TCO 5) Referring to the block diagram of a PLL below, what is the function of block B?Student Answer:Points Received:10 of 10Comments: