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A single-loop negative feedback system has the loop transfer equation:
L(s) = Gc(s)G(s) = K(s + 2)2 / (s(s2 + 1)(s + 8))
a. Sketch the root locus for 0 K infinity to indicate the significant features of the locus.
b. Determine the range of the gain K for which the system is stable.
c. For what value of K in the range of K ? 0 do purely imaginary roots exist? What are the values of these roots?
d. Would the use of the dominant roots approximation for an estimate of settling time be justified in this case for a large magnitude of gain (K 50)?
The simple inexpensive hydro turbo-generator (turbine mated with electric generator) that you intend to buy has a working efficiency of 60%. Answer the following (show your work).
What RF bandwidth is required to send the data using QPSK? If the RRC filters in the transmitter and receiver are replaced with ones that have ? = 0.20, what are the new RF bandwidths in parts (a) and (b)?
A P=900W electric motor with pf=0.82 lagging is connected to a 240 Vrms 60 hertz source. a) Draw an equivalent circuit showing impedance and phasor values for Vs, R and X. b) Find an Xc value to put in parallel with the motor which corrects the pf to..
What is the energy in joules stored in the capacitor below, The capacitor is shown with 10 volts on each side of it (plus on the left of the capacitor, - on the right), and C = 20 microfarads.
sketch the spectrum
(1) What might be an example of an input and an output What are some simple examples of what constitutes the distinction between input into a program and output from the program (2) What type of arithmetic operations are supported in C++
A point charge of 16 nc is located at Q(2,3,5) in free space and a uniform line charge of 5nC/m is at the intersection of the planes x = 2 and y=4. If the potential at the origin is 100V, find V at (4,1,3).
an inventory control system that keeps track of what items are in stock when the level falls below a certain value ?
A majority function is generated in a combinational circuit when the output is equal to 1 if the input variables have more 1's than 0's. The output is 0 otherwise. Design a 3-input (A, B, C) majority function. Use K-maps to simplify the circuit. D..
Generate a sine wave signal with amplitude A=1, and frequency=0.1592Hz. Using a uniform PCM method, quantize it ot a) 8-level and b) 16-level. Plot the original signal and the quantized signals on the same axes
The magnetic tape recorder uses linear analog to digital encoding. Telephone systems use non linear analog to digital conversion. Explain the difference.
Compute the inverse Fourier transform for X(ω) = cos 4ω. 5. A signal with the highest frequency component at 10 kHz is to be sampled. To reconstruct the signal, the sampling must be done at a minimum frequency of?
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