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An AM system has a carrier frequency of 20 kHz and carrier amplitude 10.m(t) = Sa (4000πt)
(a) Find and sketch the spectrum of the information signal. What is the bandwidth of the information signal (choose an appropriatedefinition for the bandwidth in each case)?(b) Write a time-domain expression for the modulated carrier.Include all known information.(c) Find and sketch the spectrum of the modulated carrier. What is the bandwidth of the modulated carrier.(d) Use MATLAB to plot the modulated carrier.
Evaluate the TL parameters. Include the effect of the earth as ideal. Do not incorporate the effect of the shield wires.
A 50Ω transmission line has a receiving end load impedance that produces a standing line wave with a trough on the line of 4.1V. The maximum voltage on the line is 8.14 absolute peak. The first maximum voltage location is 0.342 wavelengths away fr..
Gold cost about $100 an ounce in 1971. In 2007, the cost of an ounce of gold is hovering around $800. compute the average price increase for gold.
A full-wave bridge rectifier circuit with a 1-kohms load operates from a 120-V (rms) 60-Hz household supply through a 10-to-1 step-down transformer having a single secondary winding
Consider a pn junction diode biased at I(D) = 1mA. A sinusoidal voltage is superimposed on V(D) such that the peak-to-peak sinusoidal current is 0.05I(D). Find the value of the applied peak-to-peak sinusoidal voltage if n = 1.5. Repeat problem for..
Design a second-order band-pass IIR filter with center frequency of 200 Hz when the sampling frequency is 1000 Hz. In order to ensure the filter stability set the poles at 0.94 radial distant from the origin
Two charges are held fixed in an x-y plane. Charge Q=-1*10^-9 C is located at the origin, q=3*10^-9 C is located at (0,2). Determine the voltage (v_ba) between point 'b' located at (3,0) and point 'a' located at (1,0).
in a hydroelectric generating station the difference in level between ,the water surface and turbine driving the generators is 425 meters.if 1250 liters of water is required to generate 1 kwh of electric energy.find the overall efficiency
A state government is considering construction of a flood control dike having a life span of 15 years. History indicates that a flood occurs every 5 years, on average, and causes $600,000 in damages on each occasion.
Design I/O wiring to control forward and reverse 12Vdc motor using PLC OMRON CJ1M. Consider that the forward movement of the motor will be controlled by a forward button and the reverse movement of the motor will be controlled by a reverse button
An input signal given by Vin(t)=5cos(500pi*t)+5cos(1000pi*t)+5cos(2000pi*t) is applied to a basic lowpass RC filter. R=318.3 ohms and C=1 microFarad. Find the expression for the output signal in terms of t and pi.
A three-phase, wye-connected, 400-V, four-pole, 60-Hz induction motor has primary leakage impedance of (1+j2) ohms and secondary leakage impedance referred to the primary at standstill of (1+j2) ohms.
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