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A uniform plan wave propagating in free space strikes the planesurface of dielectric medium. The dielectric constant of one mediumis 1.25 if the permeability of each medium is the same as that offree space and the reflection coefficient is 0.25 determine thedielectric constant of the other medium?
An amplifier is to have an input of 100watts. Its effeciency is 75%, what is the maximum ambient temperature wherein this amplifier may be placed with a maximum junction temperature of 200degC and a junction to case thermal resistance.
Assuming the resistance versus temperature function to be linear, determine the expected resistance of the material at 0 degrees celcius( the freezing point of water) and at 100 degrees celcius (the boiling point of water)
The power factor of the added load is to be adjusted so that the overall power factor of the factory is 0.96 lagging. The factory is fed from a line having an impedance of 0.02 + j0.16 O. The voltage at the factory is maintained at 480 V(rms).
Sketch the complete Nyquist diagram for the following open-loop transfer function. Determine the effect of K on the closed-loop stability. Explain how the "shortcuts" contribute to the diagram.
Design a Double Sideband Amplitude Modulation (DSBAM) modulator and demodulator system using the SystemView software. The modulating wave m(t) = Amcos(2pifmt) and the carrier wave c(t) = Accos(2?fct) have the following parameters
An AM modulator is operation with an index of 0.4. The modulation input is m(t) = 4 cos(3πfmt) + 2 cos(5πfmt) + 4 cos(7πfmt) (a) Sketch the spectrum of the modulator ouput showing the weights of all impulse functions.
Using bit-slicing technique, design a circuit that calculates the expression 2*a-b. Operands a, and b are each 4 bits long. The result is represented using 5 bits. Show the transistor-level design using dynamic circuits.
Although this forms PNP and NPN transistors, the bias of the regions is designed so the junctions are reverse biased and the electric field effects on the channel are supposed to control the MOS-FET transistor soperations.
The exponential Fourier series coecients for a signal x(t) are: ak= { 1.57 when k=0, 0 when k is even and k doesnt equal 0, ((-1)(k-1)/2)/k when k is odd} Determine the following: (a) Plot the spectrum of the Fourier series.
An instructor in Engineering Department has the following grading policy: "Curving of grades is achieved by adding to every grade the difference between 99 and the highest grade in the class"
A small house has three windows and two doors. Each window and door has a switch attached such that the contacts close when a door or window opens. Draw a ladder logic diagram that will turn on a light if one or more windows are open or if both do..
The sampled signal x[n] obtained above is processed by the ideal D-to-C converters with the sampling rate (600 Hz). Obtain the representation of the continuous signal. Determine the Nyquist sampling rate such that no aliasing occurs in the sampled..
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