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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.
You are considering an investment in a one-year gov't debt security with a yield of 5 % or a highly liquid corporate debt security with a yield of 6.5%. The expected inflation rate for the next year is expected to be 2.5%.
How many turns of wire are required to produce a B-field whosemagnitude is greater than or equal to 10-3[T] inside anair-wound solenoid that is 2 [cm] long and carries a current of 100[mA].
If inflation is expected to average 1.5 % points over both the next ten yrs and thirty years, determine the maturity risk premium for the thirty-yr bond over the 10-year bond.
If a lowpass filter with a DC gain of 1 and 3 poles, all at 3KHzis used as an antialiasing filter, at what frequency will the aliased signal ( 5KHz) appear abd wgat will be the amplitude of the aliased signal.
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, what is the resultant amplitude of the two waves
A 12-bit ADC with a Vref of 5V is used to digitize small signals with a quiescent value of 2.5V and a variation around 2.5 of +/- 100mV. What is the SNR of the digitized signal if the ADC is ideal
A parallel plate capacitor has a capacitance of 4.5 µF when filled with a dielectric. What is the dielectric constant of the dielectric
Assume a financial system has a monetary base of $25 million. The required reserves ratio is 10%, and there are no leakages in the system.
Hinduism (Gandhi and his Satyagraha Movement). What do you consider your most significant learnings from it?
A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground. What are the speeds of the two s..
Determine the cost per kilowatt hour for the energy delivered by a typical alkaline 9-V "transistor" battery that costs $1.95 and is capable of delivering a current of 50 mA for a period of 10 hours. (For comparison, the approximate cost of energy..
A buck converter has input voltage of 10 V, switching frequency 1 kHz, The load resistance of 5 Ω requires average voltage of 5 V with a maximum ripple of 20 mV. The maximum ripple current of the inductor is 0.2 A.
Find the transfer function and the difference equation for a 2nd -order FIR filter that has unity d.c. gain, but for which the given input x(k) produces zero forced response. (Your filter will have a "notch" at the given frequency, and H(1) =1.)
Three single-phase two-winding transformers, each rated 25 MVA, 34.5/13.8 kV, are connected to form a three-phase bank. Balance positive-sequence voltages are applied the high voltage terminals, and a balanced, resistive Y load connected
1-for an FM reciever tuned to 94.5 MHZ using high side-injection and a first IF of 10.7 MHZ, Determine the image frequency and the local oscillator
Find the largest possible number of independant vectors v1=column[1 -1 0 0] v2= column[1 0 -1 0] v3=column[ 1 0 0 -1] v4= column[ 0 1 -1 0] v5= column[0 1 0 -1] v6= coolumn[ 0 0 1 -1] note all are column vectors
The read arm of a computer disk drive has the transfer function of G(s) = 1000/s^2. Design a digital controller that has a bandwidth of 100 Hz and a phase margin of 50 degrees. Use a sample rate of 6kHz.
design a multirange ammeter with ranges of 1-10mA,0-100mA, and 0-1500mA, using a 5mA movement whose internal resistance is 3.8ohms. draw a circuit diagram of the meter.
Consider a satellite communication link with a one way propagation delay of 300ms between the sender and receiver, operating at 10Mbps using packets of length 1500bytes. Length of the ACK packet is also 1500 bytes.
A rigid container holds hydrogen gas at a pressure of 3.0 atm and a temperature of 2.0° C. What will the pressure be if the temperature is raised to 10° C
The flow-rate of blood is assumed to be at high enough a rate that blood behaves as a Newtonian fluid. The fiber diameter is 600 microns and their length is 30 cm. You want a flow-rate of 12 ml/min for each fiber.
Using the IIR digital filter design, determine the difference equation to generate a single 852 Hz tone with a sampling frequency of 8000Hz
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