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Develop a set of performance curves, similar to those shown in Figure 7.8, that illustrate the performance of a coherent demodulator as a function of the phase-error variance. Let the SNR be a parameter and express the SNR in decibels. As in Figure 7.8, assume a QDSB system. Repeat this exercise for a DSB system.
Calculate the resistance of the ring, using a value of 3.3 x 10^(-8) ohm/m for the resistivity of the aluminum, and from it, find the current in the ring.
Explain why learning reduces the effective marginal cost of production. If firms set prices in proportion to their marginal costs, as suggested by the Economics Primer, how can learning firms ever hope to make a profit?
Draw a circuit model of the path of current through the human body for a person touching a voltage source with both hands who has both feet at the same potential as the negative terminal of the voltage source.
Write the magnitude function for a third order Chebyshev filter having a ripple coefficient of 0.4. Do not expand. Also find the cutoff frequency.
A factory is to be supplied with 408Y/277 3 phase, 4 wire electrical service. The total estimated single-phase load is 25 kW, at .9 lagging power factor. The total estimated three-phase load is 250 kW at .85 lagging power factor.
At the receiver, demodulate the double side band signal S(t) = [cos(90*pi*t) + cos(120*pi*t)] * [cos(400*pi*t)], with the local carrier cos(400*pi*t). Design a low pass filter to suppress the carrier and plot the amplitude spectrum of S(t)
If you had to explain to a 7-year-old child why engineering is important to society, what information from the history of engineering would you relate? Why?
What are the Different Types of Solar Panel and Which one is the best PV Panel ?
What is the Role of Capacitor in AC and DC Circuit system ?
A sinusoidal current is zero at t = -0.625 s and increasing at a rate of 8000pi A/s. The maximum amplitude of the current is 5 A. a. What is the frequency of i in radians per second b. What is the expression for i
a three-phase,four pole,480 V,60 Hz,Y-connection slip-ring induction motor has the following parameters: R1=R'2=0.5 ohm ; X1+X'2=5 ohm. compute the starting torque and inserted rotor resistance that increases the starting torque by factor of 4.
The normalized lowpass filter with a cutoff frequency of 1 rad/sec is given as Hp(s) 1/s+1. Use Hp(s) and the BLT to obtain an corresponding IIR digital high passs filter with a cutoff of 30 Hz, assuming a sampling rate of 200 hz,
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