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An engineer must grow a 8" diameter, 6 foot long boule of n-type Si where the doping concentration is 4 x 1014 cm-3 at the midpoint of the boule.a. What dopant should the engineer use to obtain the largest fraction of the boule with a doping concentration between 2 - 6 x 1014 cm-3?b. What is the range in resistivity values for this doping variation?c. What is the weights of the dopant and Si that should be used as the melt?d. Design a process in which you determine weights of the dopant and Si that should be in the initial melt and the weights of the dopant and/or Si that should added once at some point during the growth of the boule to yield a largest possible fraction of the boule that will meet the doping concentration range.
Using the time independent one dimensional Schrodinger equation, find the expression of the allowed energy levels for an electron in infinite potential well of width Δz= L (i.e. solve the differential equation and apply B.C. to obtain En)
a) Draw the state diagram b) Draw the schematic for the logic to implement this circuit using Inverters, AND gates, OR gates and D flip flops. Use the reverse side and additional sheets if needed.
A GPS receiver located at ground level simultaneously detects signals from three ground-based transmitters. The first signal, originating from Shenandoah University in Winchester, is decoded to read "the time is 10:12:07.612040".
The variables are provided as high (1) and low (0) levels for digital control. An alarm should be initiated whenever any of the following occur: a. Speed is low; both weight and loading rate are high.
Determine whether the follow signals are period and for those that are find the fundamental period. F: x(t) = cos(t)u(t) G: x(t) = v(t) + v(-t) where v(t) = cos(t)u(t) I: x[n] = cos((1/5)(pi)(n)) * sin((1/3)(pi)(n))
Compute the power absorbed by an element in a circuit, but for a simple sinusoidal current i = sin(2πt/T) where T = 1 s.
A square plate of titanium is 12cm along the top, 12cm on the right side, and 5mm thick. A normal tensile force of 15kN is applied to the top side of the plate. A normal tensile force of 20kN is applied to the right side of the plate.
Consider the analogue cosine signal y(t) = COS(8.8pit). It is sampled using a sampling interval of T = 0.5 sec. What is meant by the term aliasing in regard to signal sampling What is the minimum sample rate that should be used to avoid aliasing
Interface binary Input Output devices to the microcontroller
if a 1mA movement has an internal resistance of 43 ohms, calculate the shunt resistance required to increase its range to 50mA and also 300mA.
The aim of this experiment is to develop a bipolar transistor amplifier with a voltage gain of minus 25. The amplifier must accept input signals from a source impedance of 1 kW and provide an undistorted output amplitude of 5 V when driving a 560..
A one quarter wavelength piece of 75 ohm microstrip line has a capacity load of Xc = 22 ohms. What impedance does a driving generator see
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