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Question 2.Question :(TCO 4) From the spectrum analyzer display below, determine the modulation frequency.Student Answer:5KHz15KHz30KHz90KHz
200KHzInstructor Explanation:Modulation frequency is the difference between any two consecutive frequencies. 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. 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:3
71015Points 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).Points Received:0 of 10Comments: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"? Points Received:10 of 10Comments: