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A copper wire has a diameter of 2.05 mm and carries a current of 5 A due solely to electrons. (these values are common in residential wiring.) Each electron is has a charge of of -1.6 × 10-19 C. Given that the free electron (those electrons capable of moving through the copper) concentration in copper is 1029 electrons/m3, find the average velocity of the electrons in the wire.
What is the equivalent (total) resistance of 100, 200, and 50 resistors connected in series What is the equivalent (total) resistance of 100, 200, and 50 resistors connected in parallel
Consider a 500-gallon tank that needs to be filled when the level goes below 25 gallons and will stop when the level goes above 475 gallonsControl systems can be either open-loop or closed-loop
a high power FM station of frequency 96.9 MHz has an antenna height of 1200 feet. If the signal is to be recieved 60 miles from the station, how high does the listener need to mount their anntena in this fringe area
The instantaneous power p into a one port containing resistors and inductors has maximum value 100(1+sqrt2) W and minimum value 100(1-sqrt2)W. (note that instantaneous power is measured in W, and it contains various contributions
We have v1(t)=10cos(wt+30degrees). The current i1(t) has an rms value of 5A and leads v1(t) by 20s. (The current and the voltage have the same frequency) Draw a phasor diagram showing the phasors.
A 25MVA, three phase, 13.5kV, Y-connected, two pole, 60Hz synchronous generator was tested by the open circuit test and short circuit test and tabulated in table 1. If the armature resistance is 0.24 ohms per phase.
Design the electrical system for a shopping center with 500,000 square feet at least 30 spaces of three different sizes (5,000, 10,000 and 25,000 sf). They may be offices, banks, restaurants and shops.
Derive a system diagram for a frequency-modulated transmitter and explain the function of each stage and detect and reproduce (demodulate) the message signal. Measure the frequency of the detected signal and compare that with the frequency of the m..
Autocorrelation and Tao, question from my ECE 302 class regarding the mean of a random process given a particular autocorrelation function in terms of tao.
A 3-phase, 60 Hz supply and two 3-phase synchronous machines are available. Determine the speed, and a suitable number of poles, for each synchronous machine to provide: a) A 3-phase, 180 Hz supply. b) A 3-phase, 500 Hz supply.
Use the initial and final value theorems to find the initial and final value of the time function corresponding to the following Laplace transform X(s) = x/(s+1)(s+4)
Assuming the input resistance of the load cell is 420 and rated output is 3.0mV/V at the rated capacity. What should be the series resistance that should be added to the excitation side so that the output voltage I reduced to 2.0mV/V
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