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A large brass washer has a 2-cm inside diameter, a 5-cm outside diameter, and is 0.5 cm thick. Its conductivity is s = 1.5 × 107 S/m. The washer is cut in half along a diameter, and a voltage is applied between the two rectangular faces of one part. The resultant electric field in the interior of the half-washer is E = (0.5) af V/m in cylindrical coordinates, where the z axis is the axis of the washer.
(a) What potential difference exists between the two rectangular faces?
(b) What total current is flowing?
(c) What is the resistance between the two faces?
How much hydrogen would be needed to give the car a range of 300 miles if the source of electricity is an on-board fuel cell with an efficiency that is 50% of the ideal?
A three-phase, four-pole, 50-hp, 480-V, 60-Hz, Y-connected induction motor has the following parameters per phase: r1 = 0.10 , x1 = 0.35 , r2' = 0.12 , x2' = 0.40 . It is known that the stator core losses amount to 1200 W and the rotational lo..
The following signals are sampled using a train of impulses with periodicity kT: signal x(t) Is sampled to obtain and signal y(t) Is sampled to obtain yc(t) Determine the range of values for T that allows complete recovery of x(t) from xc(t)
Contains basic function in MATLAB files. Write MATLAB script(s) to plot the basic signals below in two subplots. The upper subplot should be a continuous waveform (don't do g) and the lower subplot should be a discrete plot.
a particular electric utility charges customers different rates depending on their daily rate of energy consuption 0.05khw up to 20 kwh and 0.1 kwh for all energy usage above 20 kwh in any 24 hour period.
A 50 kVA, 6360V/230V transformer is tested on open and short-circuit to obtain its efficiency. The results of the tests are as follows. Open circuit: primary voltage, 6360V; primary current, 1A; power input, 2 kW. Short circuit: voltage across pri..
The signal given is x(t) =cos(440*2*pi*t) +cos(554*2*pi*t)+cos(659*2*pi*t) Find the complex exponential forier series of the signal and plot k vs Ck for k=-1000 to 1000.
The output SNR of a 13-bit PCM was found to be insufficient at 30 dB. To achieve the desired SNR of 42 dB, it was decided to increase the number of quantization levels L. Find the fractional increase in the transmission bandwidth required for this..
Determine the output frequency for a frequency division circuit that contains 12 flip-flops with an input clock frequency of 20.48 MHz.
1. What does "transfer function" of a filter represent 2. What do the Amplitude Ratio (Gain) and Phase Angle represent 3. What are the key differences between a real filter (the RC circuit) and an Ideal Filter (please read LPF Treated as an Ideal F..
The DC resistance of the primary windings of a certain transformer is found to be 22ohm while the resistance of the secondary windings is 0.8ohm. When a 60 Hz sinusoidal source is connected to the primary "with the secondary open circuited"
1) Determine the resistance range for resistors with the following color codes: a. Red-Orange-Orange-Silver b. Gray-Red-Red-Gold c. Yellow-Purple-Yellow-Gold 2) Determine the color code for the f..
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