Faculty of Science Technology and Engineering Department of Physics Senior Laboratory Faraday rotation AIM To show that optical activity is induced in a certain type of glass when it is in a magnetic field. To investigate the degree of rotation of linearly polarised light as a function of the applied magnetic field and hence determine a parameter which is characteristic of each material and known as Verdet’s constant. BACKGROUND INFORMATION A brief description of the properties and production of polarised light is given in the section labelled: Notes on polarisation. This should be read before proceeding with this experiment. Additional details may be found in the references listed at the end of this experiment. Whereas some materials, such as quartz, are naturally optically active, optical activity can be induced in others by the application of a magnetic field. For such materials, the angle through which the plane of polarisation of a linearly polarised beam is rotated () depends on the thickness of the sample (L), the strength of the magnetic field (B) and on the properties of the particular material. The latter is described by means of a parameter introduced by Verdet, which is wavelength dependent. Thus:  = V B L Lamp Polariser Solenoid Polariser Glass rod A Solenoid power supply Viewing mirror EXPERIMENTAL PROCEDURE The experimental arrangement is shown in the diagram. Unpolarised white light is produced by a hot filament and viewed using a mirror. • The light from the globe passes through two polarisers as well as the specially doped glass rod. Select one of the colour filters provided and place in the light path. Each of these filters transmits a relatively narrow band of wavelengths centred around a dominant wavelength as listed in the table. Filter No. Dominant Wavelength 98 4350 Å 50 4500 75 4900 58 5300 72 B 6060 92 6700 With the power supply for the coil switched off, (do not simply turn the potentiometer to zero: this still allows some current to flow) adjust one of the polarisers until minimum light is transmitted to the mirror. Minimum transmission can be determined visually. • Decide which polariser you will work with and do not alter the other one during the measurements. • The magnetic field is generated by a current in a solenoid (coil) placed around the glass rod. As the current in the coil is increased, the magnitude of the magnetic field will increase as shown on the calibration curve below. The degree of optical activity will also increase, resulting in some angle of rotation of the plane of polarisation. Hence you will need to rotate your chosen polariser to regain a minimum setting. 0 1 2 3 4 5 0.00 0.02 0.04 0.06 0.08 I (amps) B (tesla) Magnetic field (B) produced by current (I) in solenoid • Record the rotation angle () for coil currents of 0,1,2,3,4 and 5 amps. Avoid having the current in the coil switched on except when measurements are actually being taken as it can easily overheat. If the coil becomes too hot to touch, switch it off and wait for it to cool before proceeding. • Plot  as a function of B and, given that the length of the glass rod is 30 cm, determine Verdet’s constant for this material at the wavelength () in use. • Repeat the experiment for each of the wavelengths available using the filter set provided. • Calculate the logarithm for each V and  and tabulate the results. By plotting log V against log , determine the relationship between V and . [Hint: m log(x) = log (xm) and log(xy) = log(x) + log(y)]. • Calculate the errors involved in your determination of V. The uncertainty in a value of B may be taken as the uncertainty in reading the scale of the calibration curve) • The magnetic field direction can be reversed by reversing the direction of current flow in the coil. Describe the effect of this reversal and provide an explanation. Reference Optics Hecht.

Faculty of Science Technology and Engineering Department of Physics Senior Laboratory Faraday rotation AIM To show that optical activity is induced in a certain type of glass when it is in a magnetic field. To investigate the degree of rotation of linearly polarised light as a function of the applied magnetic field and hence determine a parameter which is characteristic of each material and known as Verdet’s constant. BACKGROUND INFORMATION A brief description of the properties and production of polarised light is given in the section labelled: Notes on polarisation. This should be read before proceeding with this experiment. Additional details may be found in the references listed at the end of this experiment. Whereas some materials, such as quartz, are naturally optically active, optical activity can be induced in others by the application of a magnetic field. For such materials, the angle through which the plane of polarisation of a linearly polarised beam is rotated () depends on the thickness of the sample (L), the strength of the magnetic field (B) and on the properties of the particular material. The latter is described by means of a parameter introduced by Verdet, which is wavelength dependent. Thus:  = V B L Lamp Polariser Solenoid Polariser Glass rod A Solenoid power supply Viewing mirror EXPERIMENTAL PROCEDURE The experimental arrangement is shown in the diagram. Unpolarised white light is produced by a hot filament and viewed using a mirror. • The light from the globe passes through two polarisers as well as the specially doped glass rod. Select one of the colour filters provided and place in the light path. Each of these filters transmits a relatively narrow band of wavelengths centred around a dominant wavelength as listed in the table. Filter No. Dominant Wavelength 98 4350 Å 50 4500 75 4900 58 5300 72 B 6060 92 6700 With the power supply for the coil switched off, (do not simply turn the potentiometer to zero: this still allows some current to flow) adjust one of the polarisers until minimum light is transmitted to the mirror. Minimum transmission can be determined visually. • Decide which polariser you will work with and do not alter the other one during the measurements. • The magnetic field is generated by a current in a solenoid (coil) placed around the glass rod. As the current in the coil is increased, the magnitude of the magnetic field will increase as shown on the calibration curve below. The degree of optical activity will also increase, resulting in some angle of rotation of the plane of polarisation. Hence you will need to rotate your chosen polariser to regain a minimum setting. 0 1 2 3 4 5 0.00 0.02 0.04 0.06 0.08 I (amps) B (tesla) Magnetic field (B) produced by current (I) in solenoid • Record the rotation angle () for coil currents of 0,1,2,3,4 and 5 amps. Avoid having the current in the coil switched on except when measurements are actually being taken as it can easily overheat. If the coil becomes too hot to touch, switch it off and wait for it to cool before proceeding. • Plot  as a function of B and, given that the length of the glass rod is 30 cm, determine Verdet’s constant for this material at the wavelength () in use. • Repeat the experiment for each of the wavelengths available using the filter set provided. • Calculate the logarithm for each V and  and tabulate the results. By plotting log V against log , determine the relationship between V and . [Hint: m log(x) = log (xm) and log(xy) = log(x) + log(y)]. • Calculate the errors involved in your determination of V. The uncertainty in a value of B may be taken as the uncertainty in reading the scale of the calibration curve) • The magnetic field direction can be reversed by reversing the direction of current flow in the coil. Describe the effect of this reversal and provide an explanation. Reference Optics Hecht.

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Evaluation Methodology , Fall 2015 EVALUATION PROPOSAL GUIDELINES The evaluation proposal is a major application of knowledge assignment for this course. The proposal should represent your cumulative knowledge of evaluation research methodology. You may be required to submit part of this assignment in sequential stages. If so, you will be provided, in writing, the due dates for the various aspects of the proposal. The date for the submission of the entire proposal is indicated in your course outline. The below components must be included in the proposal. I. Introduction (maximum 10 pages) A. Description of the Program and Organization (the Evaluand) (In this section, be sure to describe who, what, when, and how long the program has been in place; describe the program, types of people involved in the program, and the types of services offered; briefly discussed need for program as determined by program managers) I. Organizational Overview 1. Program Mission, Goals, SMART Objectives, Activities, Resources 2. Organizational Context of the Program II. Program Logic Model of Evaluand (insert program logic model from your previous assignment, attending to feedback from instructor and classmates) III. Significance of the Program and the Evaluation Discuss the Rationale of the Evaluation B. Evaluation Goals, Objectives, and Stakeholders Objectives of the Evaluation Study Description of Key Direct and Indirect Evaluation Stakeholders (e.g., clients, agents, beneficiaries, etc.) Potential Constraints and Barriers of the Evaluation Evaluation Proposal Guidelines (continued) C. Evaluation Approach, Questions and/or Hypotheses Evaluation Approach/Guiding Framework Evaluation Questions (at least three process and three outcome questions) Describe How Evaluation Questions Will Be Generated II. Methodology (maximum 10 pages) A. Participants Target Population/Sample Plan (describe the target population/sample from whom you intend to obtain collect data; justify sampling procedures by relating them to stakeholder characteristics, evaluation questions and criteria, and constraints of the evaluation) Handling Respondents’ Confidentiality and Ethical Concerns (include Informed Consent Form) B. Instrumentation Data Collection Instruments/Measures Describe Measures, Justify Choices, Address Issues of Validity, Reliability, and Cultural/Contextual Relevance; Rationale for Selection of Instruments C. Evaluation Design Data Collection Procedures (Research Design – Qualitative, Quantitative, Mixed Methods) Explain Choice for Data Collection Methods Selected D. Data Map (set up a data map or summary table to show how each step of the evaluation is related to each other); see example below) Evaluation Methodology Evaluation Proposal Guidelines (continued) Table 1. Data Map of Evaluation of the Kids House Afterschool Program (An Illustrative Example) Evaluation Questions Methodology Data Collection Strategy Timeline Does the program provide individual tutoring to the children in the community three days per week, as intended? (process question) Document analysis Evaluator will review copies of program’s weekly service delivery records Ongoing Has the program reached it intended target population? (process question) Document analysis Evaluator will review documents describing the children being served Six weeks after program start How satisfied are the children and their parents (guardian) with the Kids house Program? Qualitative Focus group interviews with the children in the program and separately with their parents (guardian) Ongoing after two weeks program start Did the children in the Kids House Program demonstrate significant improvements in reading? Quantitative Pretest/Posttest Questionnaire Pretest at first session Posttest at last session E. Projected Statistical Analysis of Data F. Data Collection Schedule (Timetable) (must be described in chart form) G. Standards for Evaluation (describe how your proposed evaluation will meet the Program Evaluation Standards – utility, feasibility, propriety, accuracy, accountability and the AEA Guiding Principles for Evaluation) III. Evaluation Products and Communication Plan (maximum two pages) A. Listing of Deliverable or Products Evaluation Methodology Evaluation Proposal Guidelines (continued) B. Communicating Results: The Evaluation Report (describe plan for communicating evaluation findings during the evaluation and at the end of the evaluation – orally? written report? combination? who will you involve in a discussion of the findings and why) . C. Potential Use of Findings for Aiding Direct and Indirect Stakeholders IV. Staffing, Management Plan, and Budget (maximum two pages) A. Describe tasks, deadlines, and who completes them? B. Describe the time, money, and other resources required for addressing your evaluation questions C. Include a narrative a budget and time schedule in table format V. References (minimum of three sources) VI. Appendices (include copies of instruments, consent forms, etc.) VII. Reflective Journaling (Separate Document) Using a diary format, describe// explain what you have learned about yourself and the evaluation profession by taking this course and writing this proposal Other Important Proposal Guidelines A. Typed, double space, 12 point font; one-inch margins on all sides B. Include title page, table of contents, and (if applicable) listing of figures and/or tables C. Maximum of 25 pages (excluding cover page, references, appendices) D. Proper and complete citation for all materials and sources using the American Psychological Association Style Manual (latest edition). Evaluation Methodology Evaluation Proposal Guidelines (cont’d.) E. As a general rule, sources (unless a classic) must be within the past decade and statistical/demographic data no earlier than 2009

Evaluation Methodology , Fall 2015 EVALUATION PROPOSAL GUIDELINES The evaluation proposal is a major application of knowledge assignment for this course. The proposal should represent your cumulative knowledge of evaluation research methodology. You may be required to submit part of this assignment in sequential stages. If so, you will be provided, in writing, the due dates for the various aspects of the proposal. The date for the submission of the entire proposal is indicated in your course outline. The below components must be included in the proposal. I. Introduction (maximum 10 pages) A. Description of the Program and Organization (the Evaluand) (In this section, be sure to describe who, what, when, and how long the program has been in place; describe the program, types of people involved in the program, and the types of services offered; briefly discussed need for program as determined by program managers) I. Organizational Overview 1. Program Mission, Goals, SMART Objectives, Activities, Resources 2. Organizational Context of the Program II. Program Logic Model of Evaluand (insert program logic model from your previous assignment, attending to feedback from instructor and classmates) III. Significance of the Program and the Evaluation Discuss the Rationale of the Evaluation B. Evaluation Goals, Objectives, and Stakeholders Objectives of the Evaluation Study Description of Key Direct and Indirect Evaluation Stakeholders (e.g., clients, agents, beneficiaries, etc.) Potential Constraints and Barriers of the Evaluation Evaluation Proposal Guidelines (continued) C. Evaluation Approach, Questions and/or Hypotheses Evaluation Approach/Guiding Framework Evaluation Questions (at least three process and three outcome questions) Describe How Evaluation Questions Will Be Generated II. Methodology (maximum 10 pages) A. Participants Target Population/Sample Plan (describe the target population/sample from whom you intend to obtain collect data; justify sampling procedures by relating them to stakeholder characteristics, evaluation questions and criteria, and constraints of the evaluation) Handling Respondents’ Confidentiality and Ethical Concerns (include Informed Consent Form) B. Instrumentation Data Collection Instruments/Measures Describe Measures, Justify Choices, Address Issues of Validity, Reliability, and Cultural/Contextual Relevance; Rationale for Selection of Instruments C. Evaluation Design Data Collection Procedures (Research Design – Qualitative, Quantitative, Mixed Methods) Explain Choice for Data Collection Methods Selected D. Data Map (set up a data map or summary table to show how each step of the evaluation is related to each other); see example below) Evaluation Methodology Evaluation Proposal Guidelines (continued) Table 1. Data Map of Evaluation of the Kids House Afterschool Program (An Illustrative Example) Evaluation Questions Methodology Data Collection Strategy Timeline Does the program provide individual tutoring to the children in the community three days per week, as intended? (process question) Document analysis Evaluator will review copies of program’s weekly service delivery records Ongoing Has the program reached it intended target population? (process question) Document analysis Evaluator will review documents describing the children being served Six weeks after program start How satisfied are the children and their parents (guardian) with the Kids house Program? Qualitative Focus group interviews with the children in the program and separately with their parents (guardian) Ongoing after two weeks program start Did the children in the Kids House Program demonstrate significant improvements in reading? Quantitative Pretest/Posttest Questionnaire Pretest at first session Posttest at last session E. Projected Statistical Analysis of Data F. Data Collection Schedule (Timetable) (must be described in chart form) G. Standards for Evaluation (describe how your proposed evaluation will meet the Program Evaluation Standards – utility, feasibility, propriety, accuracy, accountability and the AEA Guiding Principles for Evaluation) III. Evaluation Products and Communication Plan (maximum two pages) A. Listing of Deliverable or Products Evaluation Methodology Evaluation Proposal Guidelines (continued) B. Communicating Results: The Evaluation Report (describe plan for communicating evaluation findings during the evaluation and at the end of the evaluation – orally? written report? combination? who will you involve in a discussion of the findings and why) . C. Potential Use of Findings for Aiding Direct and Indirect Stakeholders IV. Staffing, Management Plan, and Budget (maximum two pages) A. Describe tasks, deadlines, and who completes them? B. Describe the time, money, and other resources required for addressing your evaluation questions C. Include a narrative a budget and time schedule in table format V. References (minimum of three sources) VI. Appendices (include copies of instruments, consent forms, etc.) VII. Reflective Journaling (Separate Document) Using a diary format, describe// explain what you have learned about yourself and the evaluation profession by taking this course and writing this proposal Other Important Proposal Guidelines A. Typed, double space, 12 point font; one-inch margins on all sides B. Include title page, table of contents, and (if applicable) listing of figures and/or tables C. Maximum of 25 pages (excluding cover page, references, appendices) D. Proper and complete citation for all materials and sources using the American Psychological Association Style Manual (latest edition). Evaluation Methodology Evaluation Proposal Guidelines (cont’d.) E. As a general rule, sources (unless a classic) must be within the past decade and statistical/demographic data no earlier than 2009

Design of Electrical Systems Name: ______________________________ Note: All problems weighted equally. Show your work on all problems to receive partial credit. Resources: a) The Fundamental Logic Gate Family, Author Unknown b) Electric Devices and Circuit Theory 7th Edition, Boylestad c) Introductory Circuit Analysis 10th Edition, Boylestad d) Power Supplies (Voltage Regulators) Chapter 19, Boylestad e) Electronic Devices and Circuit Theory Chapter 5, Boylestad f) Operational Amplifiers Handout, Self g) Switch Mode Power Supplies, Philips Semiconductor h) NI Tutorial 13714-en October 6, 2013 i) NI Tutorial 13714-en V2.0 October 6, 2013 j) National Instruments Circuit Design Applications http://www.ni.com/multisim/applications/pro/ k) ENERGY STAR https://www.energystar.gov/index.cfm?c=most_efficient.me_comp_monitor_under_23_inches l) Manufactures Device Data Sheets 1) For the VDB shown below, please find the following quantities and plot the load line (Saturation / Cutoff), Q pt (Quiescent Point) and sketch input waveform and output wave form. Remember to test for Exact vs. Approximate Method. Given Bdc = hfe = 150 and RL of 10KΩ. Efficiency _ Class _____ Degrees ___ VR2_______ VE_______ VC _______ VCE ______ IC _______ IE _______ IB _______ PD _______ re’ _______ Av _______ mpp ______ Vout______ What is the effect of reducing RL to 500Ω ________________________________ What is the effect of reducing the Source Frequency to 50 Hz ________________ | | | | | | |____________________________________________ 2) For the following Networks, please complete the Truth Tables, Logic Gate Type, provide the Boolean Logic Expression. A | Vout 0 | 1 | Logic Gate Type _______ Boolean Logic Expression _________ A B| Vout 0 0| 0 1| 1 0| 1 1| Logic Gate Type _______ Boolean Logic Expression _________ A B C| Vout 0 0 0| 0 0 1| 0 1 0| 0 1 1| 1 0 0| 1 0 1| 1 1 0| 1 1 1| Logic Gate Type _______ Boolean Logic Expression _________ Operation of Transistors ____________ 3) For the Network shown below, please refer to Electronic Devices and Circuit Theory Chapter 5, Boylestad to solve for the following values: Given: Bdc1 = hfe1 = 55 Bdc2 = hfe2 = 70 Bdc Total ______ IB1 _________ IB2 _________ VC1 __________ VC2 __________ VE1 __________ VE2 __________ What is this Transistor Configuration? _______________________ What are the advantages of this Transistor Configuration? _________________________________________ _________________________________________ _________________________________________ _________________________________________ 4) Design a Four (4) output Power Supply with the following Specifications, Provide a clean schematic sketch of circuit (Please provide the schematic sketch on a separate piece of graph paper). Use a straight edge and label everything. Refer to Data Sheets as necessary. Specifications: 120 VAC rms 60 Hz Source Positive + 15 VDC Driving a 15Ω 20 Watt Resistive Load Positive +8 VDC Driving a 10Ω 2 Watt Resistive Load Negative – 12 VDC Driving a 10Ω 2 Watt Resistive Load Negative – 5 VDC Driving a 4Ω 2 Watt Resistive Load Parts available (Must use parts): 1x 120 VAC 40 Volt 3.5 Amp Center Tap Transformer 1x Fuse 1x Bridge Rectifier 12 Amp 1x LM7808 1x LM7815 1x LM7905 1x LM7912 Psource _____________ Fuse size with 25% Service Factor, 1-10 Amps increments of 1A, 10 – 50 Amps increments of 5 Amps ______ Are we exceeding Power Dissipation of any components? If so please identify and provide a brief explanation: _________________________________________________________________ _________________________________________________________________ 5) For the circuit shown below please calculate the following quantities, and Plot the Trans-Conductance Curve (Transfer Curve), (Please provide the plot on a separate piece of graph paper): You will need to refer to the 2N3819 N-Channel JFET ON Semiconductor Data Sheet Posted on Bb. VDS _________ VP ___________ VGS(off) ______ VS __________ VD __________ VG __________ PDD _________ PSource ______ VGSQ ________ IDQ __________ 6) Determine both the Upper and Lower Cutoff frequencies. Sketch Bode plot and label everything including dB Role-Off. Construct Network in Multisim and perform AC Analysis verifying frequency response and Upper and Lower Cutoff Frequencies in support of your calculations. Attach Screen shot of your Multisim Model and AC Analysis. Repeat the above for a 2nd Order Active BP Filter. You will need to research this configuration. Make sure that you use the same values for R and C. Upper and Lower Cutoff Frequencies are determined by for the 2nd Order Active BP Filter fc = 1/(2(3.14)SQRT(R1R2C1C2)). Demonstrate a change in Roll-Off from 1st Order to 2nd Order. First Order: Lower Cutoff Frequency ________ Upper Cutoff Frequency ________ Roll-Off ______________________ | | | | | | | |_____________________________________________________________ Second Order: Lower Cutoff Frequency ________ Upper Cutoff Frequency ________ Roll-Off ______________________ | | | | | | |_____________________________________________________________ 7) The following questions relate to LED Backlight LCD Monitors. (Please feel free to use more paper if need be). See Resources. Please explain the differences between LED Backlight LCD Monitor, LCD and CCFL Monitors (Cold Cathode Fluorescent Lamp) Monitors. What are some advantages of LED Backlight LCD Monitors when compared with LCD and CCFL Monitors? What color LEDs are used in the creation of an LED Backlight LCD Monitor? Does a Black Background use less energy than a White Background? If you can believe the hype, how and why are LED Backlight LCD Monitors among the most energy efficient, higher than heirs apparent? 8) In this problem the goal is to verify the Transfer Characteristics of the 2N7000G Enhancement Mode N-Channel MOSFET against the manufactures Data Sheets. Please create in Multisim a Model as exampled below. First Plot by hand on Graph Paper various VGS Voltages vs ID. Second simulate using the DC Sweep Analysis. From these results verify against the 2N7000G ON Semiconductor Data Sheet Posted on Bb, remembering that the 2N7000G ON Semiconductor Data Sheet includes both Tabulated Data and Figure 2. Transfer Characteristics. Attach all results, screen shots and write a brief description of your work. • I estimate that my mark for this exam will be: ________ % • Time spent on this exam: __________ Hours • Average of time spent per week on work for EGR-330 (outside class sessions): ______________ Hours

Design of Electrical Systems Name: ______________________________ Note: All problems weighted equally. Show your work on all problems to receive partial credit. Resources: a) The Fundamental Logic Gate Family, Author Unknown b) Electric Devices and Circuit Theory 7th Edition, Boylestad c) Introductory Circuit Analysis 10th Edition, Boylestad d) Power Supplies (Voltage Regulators) Chapter 19, Boylestad e) Electronic Devices and Circuit Theory Chapter 5, Boylestad f) Operational Amplifiers Handout, Self g) Switch Mode Power Supplies, Philips Semiconductor h) NI Tutorial 13714-en October 6, 2013 i) NI Tutorial 13714-en V2.0 October 6, 2013 j) National Instruments Circuit Design Applications http://www.ni.com/multisim/applications/pro/ k) ENERGY STAR https://www.energystar.gov/index.cfm?c=most_efficient.me_comp_monitor_under_23_inches l) Manufactures Device Data Sheets 1) For the VDB shown below, please find the following quantities and plot the load line (Saturation / Cutoff), Q pt (Quiescent Point) and sketch input waveform and output wave form. Remember to test for Exact vs. Approximate Method. Given Bdc = hfe = 150 and RL of 10KΩ. Efficiency _ Class _____ Degrees ___ VR2_______ VE_______ VC _______ VCE ______ IC _______ IE _______ IB _______ PD _______ re’ _______ Av _______ mpp ______ Vout______ What is the effect of reducing RL to 500Ω ________________________________ What is the effect of reducing the Source Frequency to 50 Hz ________________ | | | | | | |____________________________________________ 2) For the following Networks, please complete the Truth Tables, Logic Gate Type, provide the Boolean Logic Expression. A | Vout 0 | 1 | Logic Gate Type _______ Boolean Logic Expression _________ A B| Vout 0 0| 0 1| 1 0| 1 1| Logic Gate Type _______ Boolean Logic Expression _________ A B C| Vout 0 0 0| 0 0 1| 0 1 0| 0 1 1| 1 0 0| 1 0 1| 1 1 0| 1 1 1| Logic Gate Type _______ Boolean Logic Expression _________ Operation of Transistors ____________ 3) For the Network shown below, please refer to Electronic Devices and Circuit Theory Chapter 5, Boylestad to solve for the following values: Given: Bdc1 = hfe1 = 55 Bdc2 = hfe2 = 70 Bdc Total ______ IB1 _________ IB2 _________ VC1 __________ VC2 __________ VE1 __________ VE2 __________ What is this Transistor Configuration? _______________________ What are the advantages of this Transistor Configuration? _________________________________________ _________________________________________ _________________________________________ _________________________________________ 4) Design a Four (4) output Power Supply with the following Specifications, Provide a clean schematic sketch of circuit (Please provide the schematic sketch on a separate piece of graph paper). Use a straight edge and label everything. Refer to Data Sheets as necessary. Specifications: 120 VAC rms 60 Hz Source Positive + 15 VDC Driving a 15Ω 20 Watt Resistive Load Positive +8 VDC Driving a 10Ω 2 Watt Resistive Load Negative – 12 VDC Driving a 10Ω 2 Watt Resistive Load Negative – 5 VDC Driving a 4Ω 2 Watt Resistive Load Parts available (Must use parts): 1x 120 VAC 40 Volt 3.5 Amp Center Tap Transformer 1x Fuse 1x Bridge Rectifier 12 Amp 1x LM7808 1x LM7815 1x LM7905 1x LM7912 Psource _____________ Fuse size with 25% Service Factor, 1-10 Amps increments of 1A, 10 – 50 Amps increments of 5 Amps ______ Are we exceeding Power Dissipation of any components? If so please identify and provide a brief explanation: _________________________________________________________________ _________________________________________________________________ 5) For the circuit shown below please calculate the following quantities, and Plot the Trans-Conductance Curve (Transfer Curve), (Please provide the plot on a separate piece of graph paper): You will need to refer to the 2N3819 N-Channel JFET ON Semiconductor Data Sheet Posted on Bb. VDS _________ VP ___________ VGS(off) ______ VS __________ VD __________ VG __________ PDD _________ PSource ______ VGSQ ________ IDQ __________ 6) Determine both the Upper and Lower Cutoff frequencies. Sketch Bode plot and label everything including dB Role-Off. Construct Network in Multisim and perform AC Analysis verifying frequency response and Upper and Lower Cutoff Frequencies in support of your calculations. Attach Screen shot of your Multisim Model and AC Analysis. Repeat the above for a 2nd Order Active BP Filter. You will need to research this configuration. Make sure that you use the same values for R and C. Upper and Lower Cutoff Frequencies are determined by for the 2nd Order Active BP Filter fc = 1/(2(3.14)SQRT(R1R2C1C2)). Demonstrate a change in Roll-Off from 1st Order to 2nd Order. First Order: Lower Cutoff Frequency ________ Upper Cutoff Frequency ________ Roll-Off ______________________ | | | | | | | |_____________________________________________________________ Second Order: Lower Cutoff Frequency ________ Upper Cutoff Frequency ________ Roll-Off ______________________ | | | | | | |_____________________________________________________________ 7) The following questions relate to LED Backlight LCD Monitors. (Please feel free to use more paper if need be). See Resources. Please explain the differences between LED Backlight LCD Monitor, LCD and CCFL Monitors (Cold Cathode Fluorescent Lamp) Monitors. What are some advantages of LED Backlight LCD Monitors when compared with LCD and CCFL Monitors? What color LEDs are used in the creation of an LED Backlight LCD Monitor? Does a Black Background use less energy than a White Background? If you can believe the hype, how and why are LED Backlight LCD Monitors among the most energy efficient, higher than heirs apparent? 8) In this problem the goal is to verify the Transfer Characteristics of the 2N7000G Enhancement Mode N-Channel MOSFET against the manufactures Data Sheets. Please create in Multisim a Model as exampled below. First Plot by hand on Graph Paper various VGS Voltages vs ID. Second simulate using the DC Sweep Analysis. From these results verify against the 2N7000G ON Semiconductor Data Sheet Posted on Bb, remembering that the 2N7000G ON Semiconductor Data Sheet includes both Tabulated Data and Figure 2. Transfer Characteristics. Attach all results, screen shots and write a brief description of your work. • I estimate that my mark for this exam will be: ________ % • Time spent on this exam: __________ Hours • Average of time spent per week on work for EGR-330 (outside class sessions): ______________ Hours

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Describe and discuss: . the significance of teaching for social justice.

Describe and discuss: . the significance of teaching for social justice.

By accepting that diverse societies have dissimilar cultures, they appreciate … Read More...
Overall, the most scientifically correct viewpoint toward predators is Select one: predators help keep prey populations from overexploiting limited food resources. generally, ecosystems support more and healthier populations when the large carnivores were eliminated from the system. there is a high level of cruelty and indiscriminate killing among larger predators. when we eliminate predators that could harm us and our activities, we also improve conditions for other animal populations. predators are a neutral influence on prey populations and our activities merely substitute us for the prey we eliminate.

Overall, the most scientifically correct viewpoint toward predators is Select one: predators help keep prey populations from overexploiting limited food resources. generally, ecosystems support more and healthier populations when the large carnivores were eliminated from the system. there is a high level of cruelty and indiscriminate killing among larger predators. when we eliminate predators that could harm us and our activities, we also improve conditions for other animal populations. predators are a neutral influence on prey populations and our activities merely substitute us for the prey we eliminate.

Overall, the most scientifically correct viewpoint toward predators is Select … Read More...
About Me Introduction – About me This webfolio provides you with a template for the construction of your portfolio for the module. Construct this portfolio as you go along and it will provide the content for the assignment . There are resources at the end of the portfolio to help you. You can also find some of the material on WOLF. If you are unsure of anything please ASK your tutor. You must attend classes to ensure that you can work on the exercises that will form part of this portfolio. The purpose of this section is to help your tutors to understand the context of your answers and your understanding of strategic issues. Welcome to (put your name here) webfolio. I am currently a student at the University of Wolverhampton Business School, studying (put your degree course in here). I have chosen to come on this particular course because (reasons for joining here). Write a short piece about yourself and what you have studied before

About Me Introduction – About me This webfolio provides you with a template for the construction of your portfolio for the module. Construct this portfolio as you go along and it will provide the content for the assignment . There are resources at the end of the portfolio to help you. You can also find some of the material on WOLF. If you are unsure of anything please ASK your tutor. You must attend classes to ensure that you can work on the exercises that will form part of this portfolio. The purpose of this section is to help your tutors to understand the context of your answers and your understanding of strategic issues. Welcome to (put your name here) webfolio. I am currently a student at the University of Wolverhampton Business School, studying (put your degree course in here). I have chosen to come on this particular course because (reasons for joining here). Write a short piece about yourself and what you have studied before

info@checkyourstudy.com About Me Introduction – About me This webfolio provides … Read More...