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If a silicon diffusion is doped with phosphorus (donors) at a concentration of 0.6 x 10^17/cm^3, what is the concentration of holes in this piece of silicon per cm^3? Assume ni = 1.45 x 10^10/cm^3, ?n = 1000 cm^2/V-s, ?p = 400 cm^2/V-s
A 3.5inch floppy disc has a nominal capacity of 2 MB. Note that there are eight bits to a byte. Estimate the area of magnetic material allocated to each bit of information. Clearly state any assumption made and carefully note any measured quantiti..
In a balanced three-phase wye-wye system, the load impedance is 4 + j3 . The source has phase sequence abc and Van = 120
Find the equivalent impedance for Z1 = 60 L+60 and Z2 = 80 L-45 when these are connected in parallel What are the branch currents and the total circuit current if the supply voltage to the circuit is VS = 240V L0
Power factor improvement, An industrial user has a number of machine tools which are driven by three phase induction motors. during a particular shift, the power factor of the combined load can vary between 0.65(100 KVA load) and 0.81 (20 KVA) loa..
For a 128-PSK modulator with an input data rate equal to 56 Mbps and a carrier frequency of 100 MHz, determine (a) minimum required bandwidth and (b) baud rate.
Water is flowing out of a tube at a near constant volumetric flowrate, V .If a graduated cylinder is used to collect a certain volume, v , of the water, and a timer is used to measure the time, t, required to collect the volume of water, the volum..
Consider a VBE multiplier with R1=R2= 1.2k ohms utilizing a transistor that has VBE= 0.6V at Ic = 1ma, and a very high beta. (b) Find the value of the current I that will result in the terminal voltage changing (from the terminal voltage 1.2-v val..
A load consists of a resistance R in parallel with a capacitor of reactance X. The load is fed from a single phase supply through a line of impedance 8.4 + j11.2 ohms. The rms voltage at the load terminal is 1200 at 0 degress V rms,
Imagine a network layer packet that travels from one host to another host across multiple local area networks interconnected by routers, Explain how the packet moves from device to device through the network.
a- for this modulator a 1-v signal produces a deviation of 20Khz determine the amplitude and phase spectra of s(t) for the modulating signal m(t) = 1.5 cos(2*pi*6*10^4*t) when fc>>fm b- find the bandwidth of the modulated signal using carson's rule..
With respect to sinusoidal signals, explain the difference between the way we normally define "amplitude" and the "amplitude" measurement on an oscilloscope. Also, How does the amplitude setting on a function generator relate to these
The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 530 paces, then due east for 130 paces. Dig." But when you arrive, you find an angry dragon just north of the tree..
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