Share
Explore BrainMass

Electrical Engineering

Half-wave controlled rectifier circuit (Power Electronics)

I've attached jpegs that show the circuits that I'm working with. My problem is that I don't know how to find the values of Ct and Rt for a specific firing angle. What formulas are needed? Is the calculation affected by the fact that there are two different loads (see circuits 1 and 2 jpegs)? What process must I go through to fi

Controller Design Using Bode Plots

Please explain design steps using bode plots and different stages of Inverse Nichols Chart. See attached file for full problem description.

For a stable, physical system, which of the following is true?

For a stable, physical system, which of the following is true? a. All the elements of the first column of the Routh stability table have the same sign. b. The elements of the first column of the Routh stability table can have either plus or minus signs. c. Neither of these. See attached file for full problem description.

Linearity, order, casuality, and time variance for systems

What are the linearity, order, causality, and time variance of each input-output relationship for systems? 1. (dy/dt) + (1/RC)y(t) = x(t) when RC = constant 2. (dy/dt) + (t^2)y(t) = x(t) 3. (d^2y/dt^2) + y(t)(dy/dt) + y(t) = x(t) 4. y(t) = x^2(t) + 1

Damping Ratio

What would the damping ratio be for a pole at s= -1 + j3?

Matlab immediate help

Hello again, I am posting a issues I need help with in matlab that the book does not help period. Again, adult student doing his best to learn everything he can and most efficiently to build my skills beyond these basics. I am trying to incorporate many things from the books that give no examples to learn better. Please sh

even and odd signals

Signal Processing & Wavelength. Problems # 6-7. See attached file for full problem description. 6. For each of the signals given, determine mathematically if the signal is even, odd, or neither. Sketch the waveforms to verify your results. For signals that are neither, find the even or odd parts of the signal. a) x(t) = 5u(t

Resubmitted mesh

Please only do problems 3.62, 3.63, 3.68, 3.69, 3.71, 3.72, 3.74. PLEASE show all equations used, work and PLEASE do not skip steps no matter how minor. I learn by example and need to see everything also including pictures of current flow, directions, picture of how each step progressed, etc.. Please show pictures of step

Digital Logic-Arithmetic Circuit

Inputs Xi and Yi of each full adder in an arithmetic circuit have digital logic specified by the Boolean functions Xi = Ai Yi = B'iS + Bi C'in where S is a selection variable, Cin is the input carry, and Ai and Bi are input data for stage i. (a) Draw the logic diagram for the 4-bit circuit, using full adders and

Runoff after rainfall

The parking lot of the Spenditall Megamall has an area of 128 ac. It is partially landscaped to provide some areas of grass. Assume that an average of 63% of the water that falls on the parking lot will flow into a nearby drainage ditch, and the rest either evaporates or soaks into unpaved areas. If as summer thunderstorm drops

Controller design using the inverse Nichols Chart

Question 1 Given P(s) = , use the Inverse Nichols Chart to design a simple G(s) to achieve the following specifications. i) zero steady state error to step output disturbance ii) │ 1 / (1+L) │ ≤ -15dB , ω ≤ 0.5 rad/s iii) │ 1 / (1+L) │ ≤ 6dB , (see attached for full problem description)

Nyquist, bode, root locus

a) Plot the Nyquist diagram for P(s) = 2(s+1)/ s(s-1) and hence plot the bode plot and transfer your information from the Nyquist diagram and bode plot to the Inverse Nichols Chart. b) Plot the positive and negative root locus for L(s) = k(s+1)/s(s-1) (see attached)

Block Diagram Reduction and Mason's Formula

Please help me with these question: Find the transfer function T= y/R for the following block diagram attached using block diagram reduction. You may use Masons gain formula.

Pole-Zero Plot for a LTI system

Consider the stable LTI system with zeros at z = plus or minus 1/2j and poles at z = 1/3 and z = 2. a) Sketch the pole-zero plot for the system and the region of convergence (ROC) by shading. b) Write down the system function H(z) for this system. c) Write down the difference equation associated with this system. (see

Fourier Transform / Sampling

The figure attached shows the continuous-time Fourier transform X of a continuous-time signal x(t). In other words, x(t) is the continuous time signal obtained by modulation of x(t) by the periodic impulse train s(t) a) Sketch s(t) if the sampling frequency is 2000Hz. b) Sketch X if the sampling frequency is 2000Hz. c

Simulink Model and Analysis

Attached are 3 jpg files. Please see page3.jpg. The nonlinear model equations for that question including the effect of a horizontal wind blowing with speed n (i.e. part (b)) is given in part 1 of page1.jpg. The linearized model equations are given in part 2 of page1.jpg and the transfer functions are given in part 3 of the

Capacitance of a Pressure Vessel

See attached file for full multi-part problem description. Find the capacitance C of a 2-m^3 pressure vessel that contains air at 50 degrees celsius. Assume isothermal (n=1) expansion process and gas constant of air is 287 N-m/kg K. a. 5.2 x 10^5 Kg-m^2/N b. 2.16 x 10^-5 Kg-m^2/N c. 2356 Kg-m^2/N d. 7235 Kg-m^

Norton Equivalent Equation

For the attached circuit, calculate the Norton Equivalent circuit at terminals a-b. a. Isc = 2.0 < 0.0 A b. Isc = 3.0 < 0.9 A c. Isc = 2.0 < -2.0 A d. Isc = 3.0 < -3.0 A

Nodal analysis calculation

In the attached circuit, calculate i(t) using nodal analysis. (See attached file for full problem description)

Problem from Hykins Book

Pr4: The signal m(t)=6sin(2*pi*t) volts is transmitted using 4-bit binary PCM system. The quantizer is of the midriser type, with a step size of 1v. Sketch the resulting sequence of quantized sample for the complete cycle of the input. Assume a sampling rate of four samples per second, with samples taken at t=+-1/8, +-3/8, +