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(a) Explain the general difference between an analog and digital signal in the time domain
(b) What graphic possibilities does DASYLab provide for digital signals (see Illustration 188 and Illustration 189)?
(c) Digital signals can only be analyzed in segments. What problems result from this?
(d) Explain the influence of the two quantities block length n and sampling rate fS on the representation of a digital signal in the time domain. How should these quantities be selected so that the digital signal on the screen is as similar as possible to the analog input signal?
(e) Explain the term "digital period length TD"
(f) When is the spectrum of a periodic analog signal reproduced correctly via digital signal processing by means of FFT?
1. Consider the Nordex 1.3MW, 60-m wind turbine with power specifications given in table 6.7 located in an area with 8m/s wind speeds. a) find the average speed in the wind (W/m^2) assuming Rayleigh statistics.
very useful not only in obtaining the rectangular and polar forms of complex numbers
The manufacturer of a 6 Volt dry-cell flashlight battery says thatthe battery will deliver 15 mA for 10 hours. During that time, thevoltage will drop from 6 Volts to 4.7 Volts. Assume the drop involtage is linear with time.
Explain how optical solitons can be generated in an optical fibre. How could the same phenomena be used for pulse compression?
what are the different methods used in frequency response analysis
A certain practical dc voltage source can provide a current of 5.5A when it is (momentarily) short-circuited, and can provide 28W to a 20Ω load. Find a.)The open-circuit voltage b.)The maximum power is could deliver to a well chosen RL
Because A-B=A+(-B), the subtraction of signed numbers can be accomplished by adding the complement. Subtract each of the following pairs of 5-bit binary numbers by adding the complement of the subtrahend to the minuend.
A 5,600 km long transatlantic (NYC-London) communications cable made of optical fibers with nf~ 1.5. A white light pulse is generated at the input end in NYC. Refractive index for red light is nred =1.51, and for blue light nblue = 1.53.
A digital communications system is being designed with the goal of transmitting 32 kbits/s over a channel having a bandwidth of 8 kHz. Determine (a) the number of encoding levels required and (b) the minimum signal-to-noise ratio required in the c..
A fiber optic audio system consists of an input, a playback head that has a transfer function of .7, an amplifier with a gain of 6 and a speaker system with a transfer function of .4. Find the output for an input of 0.08V
A substance expands from V1 = 1 ft3 to V2 = 6 ft3 in a constant-pressure process at 100 lbf/in2. The initial and final internal energies are U1 = 40 Btu and U2 = 20 Btu, respectively.
a series-tuned resonant circuit operates at a resonant frequency of 1 mhz and contains a 0.1 microfarad capacitor and
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