week7 quiz.docx - ECT263 Week 1 Quiz ading Summary These...

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ECT263 Week 1 Quiz ading Summary These 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: 5/5/2016 Time Spent: 05 min , 38 secs Points Received: 20 / 20 (100%) Question Type: # Of Questions: # Correct: Multiple Choice 4 4 Grade Details - All Questions Question 1. Question : (TCO 1) The following response curve would be produced by what kind of filter? Student Answer: Low-pass High-pass Band-pass Band-reject Instructor Explanation: A low-pass filter is one where low frequencies are passed having a maximum output while high frequencies are blocked having minimum output. Points Received: 5 of 5 Comments: Question 2. Question : (TCO 1) Calculate the wavelength of a 950KHz carrier signal. Student Answer: 337m 316m 273m 216m Instructor Explanation: Points Received: 5 of 5
Comments: Question 3.Question :(TCO 1) Which of the following would be a linear device?Student Answer:A diodeA resistorA transistor biased class CNone of the aboveInstructor Explanation:Of the choices offered, only resistors have a linear transfer function between voltage and current. That is, for example, doubling the voltage across a resistor will exactly double the current. Tripling the voltage will triple the current, and so on. Diodes and class C transistors do not have a linear correspondence between voltage and current.Frequency on the y-axisVoltage on the x-axisFrequency on the x-axisExplanation:A spectrum analyzer displays a graph of voltage as a function of frequency. Voltage is displayed on the vertical (y) axis while frequency is on the horizontal (x) axis. Points Received: 5 of 5 Comments: Question 4. Question : (TCO 1) A spectrum analyzer displays what? Student Answer: Time on the x-axis. Instructor Points Received: 5 of 5 Comments: * Times are displayed in (GMT-07:00) Mountain Time (US & Canada) ECT263 Week 2 Quiz Grading Summary
These 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: 5/13/2016 Time Spent: 25 min , 35 secs Points Received: 12 / 30 (40%) Question Type: # Of Questions: # Correct: Multiple Choice 5 2 Grade Details - All Questions Question 1. Question : (TCO 2) Referring to the diagram below, which block is the carrier oscillator? Student Answer: U W X Y Instructor Explanation: Modulation is the process of combining a high frequency(carrier) and a low frequency(modulation signal) into a nonlinear mixer. Because Y is the amplifier for modulation signal, V must be the amplifier for carrier(U). Points Received: 6 of 6 Comments:

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