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The load on a 460-V, 60-Hz, Y-connected, balance three-phase source consists of three equal Y-connected impedances of 100+j100 ohms, and three equal Delta-connected impedances of 300-j300 ohms. Compute the line current, power, and power factor for the total load.
The river estuary is tidal causing the surface level of the water to rise and fall. At certain times of day, reflections from the water surface cause deep fading of the received signal.
A calibrated RTD with ALPHA = 0.0041/°C, R = 306.5 Ohms at 20°C, and PD = 30 mW/°C will be used to measure a critical reaction temperature. Temperature must be measured between 50° and 100°C with a resolution of at least 0.1°C.
A microwave system requires a +4-dBm audio level to provide 100% modulation. Determine the voltage level required if this is a 600 ohm audio system.
Calculate the required thickness [in x-direction] of a silicon wafer in nm to create an 0.2 eV energy difference between the two lowest Enx energy states, use mn*= 0.3 x mo with mo = 9.11x10-31 kg. Assume the y and z-direction infinitely long.
Memory storage and bit density, A hard disk contains four Platters. Each side of the platter is coated with a magnetic oxide, allowing data to be stored on it. The platters are 3.5 inches in diameter.
What is the difference between multiplexing and multiple access?
The residential sector of PA consumed about 150.6x1012 Btu of electricity (www.eia.doe.gov). Assuming all of this energy comes from bituminous coal with a heating value of 14,000 Btu/lb. How MUCH coal did we burn?
Show that the power in a three-phase, three-wire system with balanced loads is constant at every instant. Deduce an expression for the power in terms of the line voltage, line current, and the power-factor.
The waveform output by the signal generator in part (b) is changed so that the rectangular pulses have the same width but no longer are periodic. They occur at random intervals of time. Explain in words how the display on the spectrum screen would..
How do we deal with a L1 cache that is Write-back Write allocate, and the L2 cache, which is a Write-through Write no-allocate?
The angle of departure is defined as 180 degrees plus the phase angle of GH computed at the complex pole, but ignoring the contribution of that particular pole.
How the cell potential has been affected in the NH3 or Na2S had been added to the 1M CuSO4 solution instead of the 0.001M CuSO4 solution of the cell? Explain.
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