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Using the computer program described in Appendix for TM scattering from p.e.c cylinders, find the surface currents for circular cylinders of circumference 1.0λo 2.vλo, and 2.405λo. If possible, compare your numerical results with exact solutions. Do the results seem to converge in every case with an increasing number of cells in the models? Based on your observations, propose guidelines for minimum cell densities.
A six pole, 40 kW, 400 V d.c. motor draws 110 A from the supply. The shunt field resistance is 200 Ohm and the armature resistance is 0.5 Ohm. The armature is wave wound with 600 conductors operates at a speed of 1200 rev/min when supplying full l..
Compute the operating torque angle δss. Assume δss = 25 degrees and computer areas A1 and A2
A 400V symmetrical three phase source with grounded neutral supplies a load comprising three impedances in star formation. The impendence have the following values:
Compute y(nT) iteratively for n=0, 1, 2, when, y(-T)=2, and x(nT) = u(n) Hint: the initial conditions are given for negative n. Shift the equation to the right to express x() and y() to eliminate all advances and end up with x(n), y(n)
Three resistors are connected in delta. If the line voltage is 13.2 kV and the line current is 102.2 A, calculate the following: a. The current in each resistor. b. The voltage across each resistor. c. The power supplied to each resistor.
Main Memory size is 256K words, Cache size is 16K words block size is 32 bytes Show the mapping in terms of tag, index and block offset for direct map, 4 way set associative, fully associative
Use superposition ONLY and find the value Vab• (Hint: For each stage, redraw the circuit in conventional form:for example, voltage source-resistor network, or current source-resistor network).
A current i(t) = 10r(t) mA is applied to a 10 mF capacitor for t > 0, where r(t) is the ramp function. At t= 0, the capacitor voltage was zero. The voltage across the capacitor at t = 2 s is
The output voltage should be 5 V, but is ~1.25 V. This output voltage is independent of the power supply voltage. That is, no matter how high or low I set the power supply voltage, the output voltage is ~1.25 V as long as the input voltage is 50 mV.
If an excess of holes is introduced into the center describe in words (and what a sketch would look like) of the minority carrier distribution after a time roughly about equal to the minority carrier lifetime
A solar pond consists of a thin layer of fresh water floating ontop of a denser later of salt water. When the salty layer absorbssun light, it becomes hot, to 140 degrees C. The ambient temp isassumed to be 20 degrees C.
Three capacitors are found that each have an impedance of -j2.0, and they are connected in parallel with the load in a wye configuration. Determine the power factor of the combined load as seen by the source.
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