info@checkyourstudy.com 2/24/2015 Assignment 2 =3484333 1/22 Assignment 2 Due: 6:43pm … Read More...
ELEC153 Circuit Theory II M2A3 Lab: AC Series Circuits Introduction Previously you worked with two simple AC series circuits, R-C and R-L circuits. We continue that work in this experiment. Procedure 1. Setup the following circuit in MultiSim.The voltage source is 10 volts peak at 1000 Hz. Figure 1: Circuit for analysis using MultiSim 2. Change R1 to 1 k and C1 to 0.1 uF. Connect the oscilloscope to measure both the source voltage and the voltage across the resistor.You should have the following arrangement. Figure 2: Circuit of figure 1 connected to oscilloscope To color the wires, right click the desired wire and select “Color Segment…” and follow the instructions. Start the simulation and open the oscilloscope. You should get the following plot: Figure 3: Source voltage (red) and the voltage (blue) across the resistor The red signal is the voltage of the source and the blue is the voltage across the resistor. The colors correspond to the colors of the wires from the oscilloscope. 3. From the resulting analysis plotdetermine the peak current. To determine the peak current measure the peak voltage across the resistor and divide by the value of the resistor (1000 Ohms). Record it here. Measured Peak Current 4. Determine the peak current by calculation. Record it here. Does it match the measured peak current? Explain. Calculated Peak Current 5 Determine the phase shift between the current in the circuit and the source voltage. We look at the time between zero crossings to determine the phase shift between two waveforms. In our plot, the blue waveform (representing the circuit current or the voltage across the resistor) crosses zero before the red waveform (the circuit voltage). So, current is leading voltage in this circuit. This is exactly what should happen when we have a capacitive circuit. 6. To determine the phase shift, we first have to measure the time between zero crossings on the red and blue waveforms. This is done by moving the oscillator probes to the two zero crossing as is shown in the following figure Figure 4: Determining the phase shift between the two voltage waveforms We can see from the figure that the zero crossing difference (T2 – T1) is approximately 134 us. The ratio of the zero-crossing time difference to the period of the waveform determines the phase shift, as follows: Using our time values, we have: How do we know if this phase shift is correct? In step 4 when you did your manual calculations to find the peak current, you had to find the total impedance of the circuit, which was: Now, the current will be: Here, the positive angle on the current indicates it is leading the circuit voltage. 7. Change the frequency of the voltage source to 5000 Hz. Estimulate and perform a Transient Analysis to find the new circuit current and phase angle. Measure them and record them here: Measured Current Measured Phase Shift 8. Perform the manual calculations needed to find the circuit current and phase shift. Record the calculated values here. Do they match the measured values within reason? What has happened to the circuit with an increase in frequency? Calculated Current Calculated Phase Shift Writeup and Submission In general, for each lab you do, you will be asked to setup certain circuits, simulate them, record the results, verify the results are correct by hand, and then discuss the solution. Your lab write-up should contain a one page, single spaced discussion of the lab experiment, what went right for you, what you had difficulty with, what you learned from the experiment, how it applies to our coursework, and any other comment you can think of. In addition, you should include screen shots from the MultiSim software and any other figure, table, or diagram as necessary.

## ELEC153 Circuit Theory II M2A3 Lab: AC Series Circuits Introduction Previously you worked with two simple AC series circuits, R-C and R-L circuits. We continue that work in this experiment. Procedure 1. Setup the following circuit in MultiSim.The voltage source is 10 volts peak at 1000 Hz. Figure 1: Circuit for analysis using MultiSim 2. Change R1 to 1 k and C1 to 0.1 uF. Connect the oscilloscope to measure both the source voltage and the voltage across the resistor.You should have the following arrangement. Figure 2: Circuit of figure 1 connected to oscilloscope To color the wires, right click the desired wire and select “Color Segment…” and follow the instructions. Start the simulation and open the oscilloscope. You should get the following plot: Figure 3: Source voltage (red) and the voltage (blue) across the resistor The red signal is the voltage of the source and the blue is the voltage across the resistor. The colors correspond to the colors of the wires from the oscilloscope. 3. From the resulting analysis plotdetermine the peak current. To determine the peak current measure the peak voltage across the resistor and divide by the value of the resistor (1000 Ohms). Record it here. Measured Peak Current 4. Determine the peak current by calculation. Record it here. Does it match the measured peak current? Explain. Calculated Peak Current 5 Determine the phase shift between the current in the circuit and the source voltage. We look at the time between zero crossings to determine the phase shift between two waveforms. In our plot, the blue waveform (representing the circuit current or the voltage across the resistor) crosses zero before the red waveform (the circuit voltage). So, current is leading voltage in this circuit. This is exactly what should happen when we have a capacitive circuit. 6. To determine the phase shift, we first have to measure the time between zero crossings on the red and blue waveforms. This is done by moving the oscillator probes to the two zero crossing as is shown in the following figure Figure 4: Determining the phase shift between the two voltage waveforms We can see from the figure that the zero crossing difference (T2 – T1) is approximately 134 us. The ratio of the zero-crossing time difference to the period of the waveform determines the phase shift, as follows: Using our time values, we have: How do we know if this phase shift is correct? In step 4 when you did your manual calculations to find the peak current, you had to find the total impedance of the circuit, which was: Now, the current will be: Here, the positive angle on the current indicates it is leading the circuit voltage. 7. Change the frequency of the voltage source to 5000 Hz. Estimulate and perform a Transient Analysis to find the new circuit current and phase angle. Measure them and record them here: Measured Current Measured Phase Shift 8. Perform the manual calculations needed to find the circuit current and phase shift. Record the calculated values here. Do they match the measured values within reason? What has happened to the circuit with an increase in frequency? Calculated Current Calculated Phase Shift Writeup and Submission In general, for each lab you do, you will be asked to setup certain circuits, simulate them, record the results, verify the results are correct by hand, and then discuss the solution. Your lab write-up should contain a one page, single spaced discussion of the lab experiment, what went right for you, what you had difficulty with, what you learned from the experiment, how it applies to our coursework, and any other comment you can think of. In addition, you should include screen shots from the MultiSim software and any other figure, table, or diagram as necessary.

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PART 1: (Total 350 pts – 35pts per hazard x 10 hazards) Each identified hazard should contain the following elements (Element 1 ~ 7 below). Furthermore, each student will need to provide his/her responses in a pragraph format for each element by JUSTIFYING/SUPPORTING his/her responses: ELEMENT 1) Explain Hazard you identified. What kind of exposure does each hazard have on employee ? What is the hazard? What could go wrong? Think in terms of “What ifs?” or “What could happen?” In this section, you are to describe a situation(s) and discuss what could happen (5pts). ELEMENT 2) Who would be at risk? Be specific group of individuals who would be at risk meaning don’t just say “employees” or “students” are affected. Rather be sure to JUSTIFY your position/response. (5pts) ELEMENT 3) Identify Risk Level for each hazard you identified. When you determine risk level, it is critical that you JUSTIFY as to why you selected certain Frequency and Severity level. (5pts) ELEMENT 4) Citation. If you were a Compliance Safety and Health Officer (CSHO), which SPECIFIC standard/regulation would you cite this hazard under and WHY? You must provide exact standard (eg: 29CFR 1910.261(a)(1)(i)….) and state what it says AND relate your identified hazards with the standard/regulation. Eg: What was violated, etc. (5pts) ELEMENT 5) What is/are the abatement(s) or control measure(s) for each identified hazards and why? In other words, what or HOW would you correct this situation and WHY? This is where you must discuss “Two Stage Approach.” (5pts) It is important for you to select an appropriate corrective measure(s) to protect your employees. Again, we are here to protect human, property, and the environment. We can’t just say “just because.” We will need to have a good reason(s) or justification(s) as to WHY we take a certain approach or a corrective measure to protect human, propert, and the environment. Therefore, strong justification is critical in this section – when you do so, make sure to cite follow APA format. ELEMENT 6) Once you applied your control measure(s), you are to reassess Residual Risk to make sure that you have either eliminated or lowered your risk level to an acceptable level. ELEMENT 7) Supprting Resources: Each student must use at least two (2) “credible” resources PER HAZARD to support his/her responses. This EXCLUDE OSHA/citations. (5pts) seven (7) elements. NOTE 2: APA format needs to be followed for this Part 1. (See attached Sample) PART 2: (Total 15pts) Once you identified 10 hazards (two hazards/standard), you are to prioritize those hazards from most critical to least based on item 2 you did in Part 1. Furthermore, each student will need to prepare ONE PAGE, STAND ALONE document which outlines PRIORITIZATION of those hazards he/she identified and provide the information as as to which hazards need to be control the most. PART 3: (Total 20pts) Based on the above findings, you are to create 1 page report that includes above findings. Remember, one page does not necessary mean a vertical view of 8 1/2 by 11 paper. When you submit this REPORT, think in terms of you submitting this report to your boss. (This is a hands-on practice as to how you will compile a report. If you don’t know how to develop a report, I encourage you to research to determine types of report and come up with your own version. Remember, you will most likely to submit a report in a future that is not more than one page……

## PART 1: (Total 350 pts – 35pts per hazard x 10 hazards) Each identified hazard should contain the following elements (Element 1 ~ 7 below). Furthermore, each student will need to provide his/her responses in a pragraph format for each element by JUSTIFYING/SUPPORTING his/her responses: ELEMENT 1) Explain Hazard you identified. What kind of exposure does each hazard have on employee ? What is the hazard? What could go wrong? Think in terms of “What ifs?” or “What could happen?” In this section, you are to describe a situation(s) and discuss what could happen (5pts). ELEMENT 2) Who would be at risk? Be specific group of individuals who would be at risk meaning don’t just say “employees” or “students” are affected. Rather be sure to JUSTIFY your position/response. (5pts) ELEMENT 3) Identify Risk Level for each hazard you identified. When you determine risk level, it is critical that you JUSTIFY as to why you selected certain Frequency and Severity level. (5pts) ELEMENT 4) Citation. If you were a Compliance Safety and Health Officer (CSHO), which SPECIFIC standard/regulation would you cite this hazard under and WHY? You must provide exact standard (eg: 29CFR 1910.261(a)(1)(i)….) and state what it says AND relate your identified hazards with the standard/regulation. Eg: What was violated, etc. (5pts) ELEMENT 5) What is/are the abatement(s) or control measure(s) for each identified hazards and why? In other words, what or HOW would you correct this situation and WHY? This is where you must discuss “Two Stage Approach.” (5pts) It is important for you to select an appropriate corrective measure(s) to protect your employees. Again, we are here to protect human, property, and the environment. We can’t just say “just because.” We will need to have a good reason(s) or justification(s) as to WHY we take a certain approach or a corrective measure to protect human, propert, and the environment. Therefore, strong justification is critical in this section – when you do so, make sure to cite follow APA format. ELEMENT 6) Once you applied your control measure(s), you are to reassess Residual Risk to make sure that you have either eliminated or lowered your risk level to an acceptable level. ELEMENT 7) Supprting Resources: Each student must use at least two (2) “credible” resources PER HAZARD to support his/her responses. This EXCLUDE OSHA/citations. (5pts) seven (7) elements. NOTE 2: APA format needs to be followed for this Part 1. (See attached Sample) PART 2: (Total 15pts) Once you identified 10 hazards (two hazards/standard), you are to prioritize those hazards from most critical to least based on item 2 you did in Part 1. Furthermore, each student will need to prepare ONE PAGE, STAND ALONE document which outlines PRIORITIZATION of those hazards he/she identified and provide the information as as to which hazards need to be control the most. PART 3: (Total 20pts) Based on the above findings, you are to create 1 page report that includes above findings. Remember, one page does not necessary mean a vertical view of 8 1/2 by 11 paper. When you submit this REPORT, think in terms of you submitting this report to your boss. (This is a hands-on practice as to how you will compile a report. If you don’t know how to develop a report, I encourage you to research to determine types of report and come up with your own version. Remember, you will most likely to submit a report in a future that is not more than one page……

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1. Which of these bands did not follow in the footsteps of Motorhead? Metallica Megadeath Iron Maiden Slayer

## 1. Which of these bands did not follow in the footsteps of Motorhead? Metallica Megadeath Iron Maiden Slayer

Which of these bands did not follow in the footsteps … Read More...