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A dc power distribution cable has two #6 copper wires. The copper wire table in the textbook lists each wire as having resistance of Ro=.4028 ohms per thousand feet at temperature of 25C. The temperature coefficient of copper is alpha=.004 per C. IF the cable is expected to operate at 75C, then the resistance would be R = Ro +Ro(alpha)(delta*T), where delta*T=50C is the temperature rise above 25C. If the cable is 455 feet long, calculate the resistance of each wire at 75C. Calculate the total cable resistance due to both wires.
Plot the magnitude response (in dB) and the impulse response of the designed filter using MatLab.
Consider a network with a driving-impedance Z. (1) Find expression for P and Q. (2) Find p(t) in terms of P and Q. (3) Suppose that the network is a series RLC. Interpret the result in part (2).
During a walk at the park we spot blue birds and red birds. Suppose each red bird with probability 3/4 and blue birds with probability 1/4. (a) In a collection of 5 randomly selected birds, what is the probability that none are blue
Watts in Cassette Players, A walker's cassette tape player uses 4 AA batteries in series to provide 6V to the player circuit. The four alkaline battery cells store a total of 200 watts-second of energy.
stochastic message signal, m(t), is transmitted down a (noiseless) cable channel by PCM, using an 8-bit code. If the ambient signal is equally likely to lie anywhere between its two extremes, (+/- mp), calculate the ration of the mean squared sign..
A capacitor in an RC circuit with R = 5.00 ohm and C = 6.00 mF is being charged. What is the time required for the capacitor voltage to reach 86.5 percent of its steady-state value
Compute the maximum and minimum spectral frequencies received by a mobile traveling at a speed of 100 Km/hr. What is the frequency of the received signal if the mobile is moving in a direction perpendicular to the direction of arrival of the trans..
A machine produces photo detectors in pairs. Tests show that the first photo detector is acceptable with probability 3/5. When the first photo detector is acceptable, the second photo detector is acceptable with probability 4/5.
The output capacitor in a certain resonant converter sees the net current equal to 40cos(50,000 pi t) A. What value of capacitance will be needed to keep the voltage variation below 5V peak-to-peak
Now, suppose that an initial voltage of 1V is present at the capacitor at zero time (t = 0). Will the behavior of the circuit when a step input is applied still yield an exponential rise or will the behavior be of some other type
A temperature sensor covers a range of 0 to 70 degrees C with an output sensitivity of 2 mV/degree C. The sensor is input to an ADC with voltage range of 0 to 4V. What is the value of the feedback resistor required for an inverting amplifier circu..
A stepper motor has 24 North teeth and 24 South teeth. What angle change occurs on each step If a full step is output every 1 ms (and assuming it doesn%u2019t slip), at what speed does the motor spin
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