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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)
Draw the corresponding ladder logic diagram - Provide a detailed description of the program functions, rung by rung.
find the equation of the angle bisector of the angles between the lines 2x + y = 5 and x − 2y = 1.
Determine how to load each truck by deciding on how many units of the product will be delivered to each by each truck. While doing so, you need to make sure that each store is delivered with exactly the number of units of the product they require.
solve the two question below using excel spreadsheet.1. a small machine costs 10000 and at the end of a 5 year life
How fast will the driver be going when the stopped traffic is hit if the coefficient of rolling resistance is constant at 0.013? (assume minimum theoretical stopping distance and ignore aerodynamic resistance)
Determine the inductance in H/m and the inductive reactance in Ω/km.
What kind of electrical load is a radio transmitter?
How websites are blocked? And how its contents are identified?
In a particular logic family, the standard inverter, when loaded by a similar circuit, has a propagation delay specified to be 0.9 ns: If the current available to charge a load capacitance is half as large as that available to discharge the capacit..
Adopt a condensing power plant with a feedwater tank (MV) with the wiring diagram and information - High-pressure turbines are isentropic efficiency of 0.88.
Topographic analysis and Feature Space and Classification - introduce basic analysis tools for DEM data and allows you to visualize remotely-sensed data using a pseudo-3D or 2.5D view.
Design a tube and shell heat exchanger for the fluids and duty given for you and complete Project Management tasks -
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