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Find the voltage v for the elements of given figure using complex algebra.
Sketch the waveforms of v and i on the same sewt of axes.
A wire has a resistance of 29.7-ohm . It is melted down, and from the same volume of metal a new wire is made that is 4 times longer than the original wire. What is the resistance of the new wire
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.
the current supplied by a battery slowly decreases as the battery runs down. suppose that the current as a function
A certain antenna installation using a transmitting frequency of 1250 kHz uses an insulated vertical tower of height 200 feet. For a 25 kW transmitter power, calculate the electric field strength at a location A at a distance of 25 km.
an electric motor has an armture constant of 140, a flux of 25 mwh, an armuture current of 30 A , and a rotatio?nal speed of 1600 rpm. what is most nearly the power output in watt
What is the charge density on the surface of the middle sheet facing the right sheet?
a potential divider has formed from 1000 ohms variable resistance. the intention is to drop 12 volts from an automobile battery to 9 volts. When the radio device was attached the voltage drops 6.1 volts.
The sampling frequency in a DSP system is fs = 8khz kHz. A hold circuit is used after the DAC device. What is the percentage of distortion level at the frequency f= 3.4 kHz
a Three phase to single phase converter employs a 6 pulse bridge circuit. This device is fed from 400V,50 Hz supply through adelta/stare transformer whose per phase turns ratio 3:1. For an output frequency of 2Hz, the load reactance is w0L =3ohm.
Explain why the concentration of dissolved oxygen in freshwater is an important indicator of the quality of the water. How is the solubility of oxygen in water affected by increasing temperature?
Let x(t) = cos(3/4(t+1/2)+1/4) a. Determine the frequency, the period of x(t) b. Given another signal, y(t)= sin(3/4(t+1)+3/8), is y(t) identical to x(t) Why
Determine the cost of the energy delivered by this battery per kilowatt hour. Compare to the $0.12 per kilowatt hour for energy purchased from electric utilities in the United States.
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