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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:6/13/2016Time Spent:15 min , 50 secsPoints Received:30 / 50 (60%)Question Type:# Of Questions:# Correct:True/False21Multiple Choice32Grade Details - All QuestionsQuestion 1.Question :(TCO 6) Referring to the block diagram below, which block is the discriminator?Student Answer:ABCDFInstructor Explanation:The discriminator is placed at the output of last IF amplifier (E). Therefore, the block F is the discriminator.Points Received:10 of 10Comments:Question 2.Question :(TCO 6) If an FM receiver is tuned to receive a carrier frequency of 160.5MHz and uses high-side injection, what would be the frequency of the local oscillator?
f LO = f c +IF=160.5 MHz+10.7 MHz=171.2 MHzPoints Received:0 of 10Comments:Question 3.Question :(TCO 6) If an FM receiver is tuned to receive a carrier frequency of 160.50MHz and is using low-side injection, what would the image frequency be?Student Answer:139.1MHz149.8MHz171.2MHz181.9MHzNone of the above.Instructor Explanation:f IM = f c −2IF=160.5 MHz−2( 10.7 MHz )=139.1 MHzPoints Received:10 of 10Comments:Question 4.Question :The Phase Comparator in the PLL can be implemented using a Multiplier.StudentAnswer:TrueFalse
Points Received:0 of 10Comments:Question 5.Question :In AM system, the recovered information signal can be obtained from the output of the lowpass filter in the AM Demodulator.StudentAnswer:TrueFalsePoints Received:10 of 10Comments:* Times are displayed in (GMT-07:00) Mountain Time (US & Canada)