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Two components of linear distortion produced by transmitting asignal through an LTI (linear time invariant) system:
Amplitude distortion - the frequency components of the input signalare transmitted through the system with different amounts of gainor attenuation.
Phase distortion - the phase response is not linear with frequency inside the frequency band of interest. Different frequency components are subject to different delay in passing through the system.
Multipath propagation model: y[n] = x[n] + ax[n-1].In general, the parameter a can be real or complex, so long as |a|< 1.
What form of linear distortion is introduced by this channel?
Compare the capacities of the fiber and conducting cables. How many of the conducting cables are required to equal the capacity of the fiber cable.
Assume the resistance of a certain type of resistor is normal distrubuted random variable with mean =12.8 ohms and standard diviation of =1.3ohms. if a single reistor is to be randomly selected from the process producing resistors.
Imagine a circuit consisted of two DC power sources of 12 volt and 10 volts. The negative terminals of these power sources are wired together. Assume that the positive terminals of these power sources are labeled as A and B respectively.
Consider the penetration of a step potential function of height 2.4 eV by an electron whose energy is 2.1 eV. Determine the relative probability of finding the electron at the distance (a) 12 A beyond the barrier, and (b) 48 A beyond the barrier
The current in a 20 mH inductor is known to be i = 40 mA, t 0.
The core is made of cast steel. Find the MMF required to get an air gap flux of 60,000 lines. The cross sectional area of the center section and air gaps is 4 in^2. The remaining sections have a cross sectional of 6 in^2.
A coil of 2000 turns surrounds a flux of 5 mWb produced by permanent magnet. The magnet is suddenly withdrawn causing the flux inside the coil to drop uniformly to 2 mWb in 1/10 of a second. What is the voltage induced.
Compute y(nT) iteratively for n=0, 1, 2, when, y(-T)=2, and x(nT) = u(n) Hint: the initial conditions are given for negative n. Shift the equation to the right to express x() and y() to eliminate all advances and end up with x(n), y(n)
A MOS differential amplifier is designed to have a differential gain Ad equal to the voltage gain obtained from a common-source amplifier. Both amplifiers utilize the same values of RD and supply voltages, and all the transistors have the same W/L..
A star-bus hybrid topology consists of a main three branch star toplogy with each branch connecting three stations in a bus topology. This toplogy is changed to a new bus-ring hybrid topology with main five station bus topology.
Calculate current flow and describe its probable path. Will the breaker likely be tripped? Is there a risk of electrocution? If so what factors contribute to the risk?
Write a program that counts the number of characters in a text file. Write a program that count the number of words in a text file. Write a program that counts the number of lines in a text file.
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