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1) For a semiconductor E vs kx near the band edge Ec is given by E=Ec +(h2/16m0)*kx2Determine the effective mass of electrons in the conduction band. Here m0 is the mass of a free electron.
2) E vs. kx for electrons near the valence band edge Ev can be approximated byE=Ev-0.1(h2/4m0)*kx2Find the effective mass of holes in this material.
The unknown input impedance of a horn antenna operated at a frequency of 300MHz is measured using a slotted transmission line and a Smith Chart. When the antenna is connected to the slotted line, the VSWR on the line is measured to be 4
If 15 newtons of force is applied to a surface and the pressure is measured as 4,000 Pascals, what is the area of the surface in units of square meters
When a HIGH is on the output of the decoding circuit below, what is the binary code appearing on the inputs?
An MFSK modulation scheme with M = 4has a carrier frequency of 250 kHz, a difference frequency of 25 kHz, and two bits per signal element. Make a frequency assignment for each of the possible data combinations.
A Y-connected load has an impedance of 25+j12 ohms in each phase. It is desired to raise the load power factor to .95 lagging. (a) What size capacitor should be placed in parallel with each phase impedance if frequence = 60 Hz
Simple in concept, but complicated in execution because of the resulting integrand: Explicitly evaluate (in Cartesian coordinates) the surface integral (flux) over the surface S defined as the face of the cube that is perpendicular
Consider a PCM-TDM system in which 24 signals are to be processed. Each signal has a baseband bandwidth of 3 KHz. The sampling rate has to be 33.3% higher than the theoretical minimum, and 8 bits are to be used.
The MFSK scheme is used in conjunction with an FHSS scheme that hops among 4 different carrier frequencies. What is the number of possible frequency assignments. List the possible frequency assignments.
A. Determine the fundamental frequency w0, the period t0, and the coefficients in the representation X(t) = x0 + Re{(sigma)k=1N Xkejkwot} for the above input. C. Now consider a new signal y(t) = x(t) + 10 cos (50 pi t - pi/6). How is the spectrum ..
algorithms to show the differences in the intra prediction in the h.264 and hevc coding standards. it should indicate how the intraprediction in the two coding standards makes a difference in their efficiency.
Students should type up, assemble and emulate the BIN2ASCII program which converts the value entered in R3 from Hexadecimal to ASCII. This should be done by dividing R3 by 10 (decimal) and converting the remainder to ASCII
A particular signal source produces an output of 30 mV when loaded by a 100-k ohm resistor and 10 mV when loaded by a 10-k ohm resistor. calculate the thevenin voltage, Norton current, and source resistance.
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