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Question 1:
- Describe how the Schering Bridge is balanced when measuring the loss angle tan-delta and capacitance of an unknown dielectric. (Do not exceed 200 words)
- Derive an expression for tan-delta and capacitance in terms of the known values of R and C of the other branches of the bridge.
- Explain the role of "Wagner Earth" in balancing the bridge. (Do not exceed 100 words)
Question 2:
- Describe how discharges in a void inside a solid dielectric is detected using the PD test circuit. Also, explain how the measured apparent charge can be related to the actual discharges in the void. (Do not exceed 200 words)
- Analyze the following insulation systems using partial discharge patterns. In all cases assume that the test object is a solid insulation of thickness much larger than the depth of the cavity (defect). The insulation is stressed with power frequency AC voltage of magnitude much higher than the PD inception levels. Illustrate the patterns on an elliptical display of the discharge activities in each case. Provide your justifications in terms of influence of the electric field and the physics of discharge activities. (Do not exceed 200 words)
Your research paper should be no more than three (3) full pages, double spaced, 1-inch margins, in New Times Roman 12-pitch font, with a cover page (name, course number, date, title of paper) and a reference page.
1) What does it mean to conduct a fatigue test with R = -0.5? 2) If you have a material that is initially hard and strong, would you expect it to cyclically harden or soften? What would be a way of characterizing how strong it must be initially to..
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For the column decoder shown in Fig. 16.26, how many column-address bits are needed in a 1-Mbit-square array? How many NMOS pass transistors are needed in the multiplexer? How many NMOS transistors are needed in the NOR decoder? How many PMOS tran..
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Calculate the Stations & Elevations for all of the U/S reaches including the transitions.
Wire the circuit for Reading the output voltage from Potentiometer Voltage Divider. Verify and upload the sample program, adjust the potentiometer to display reading on the serial monitor
Discuss the key problems associated with using packaged software? How can these problems be minimized?
You have been supplied with a set of measurements for the lifetime of a bearing in the file ass3q1data.csv. You should use this data to construct a model for the behaviour of the real lifetime (the lifetime of the population). It has been well-est..
Companies or corporations typically offer paid vacation and sick leave; where is this money calculated in your invoices to the clients?
Watch the video Week 6 - Oscillator Circuit. Construct and simulate the oscillator circuit.
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