Homework Statement
Below is the bode plot of return difference, 1+C(S)P(S) in a feedback system. Identify the frequencies where the feedback is large, negative, positive and negligible.
P(S) = \frac{100}{s^2+2s+1}
C(S) = \frac{220(s+50)}{s+200}
Homework Equations
Bode Plot, Feedback
The...
Homework Statement
The state space model of a nonlinear system is
x'_1(t) = 2x^2_2(t) - 50
x'_2(t) = -x_1(t) - 3x_2(t) + u(t)
Where x_1(t) and x_2(t) are the states, and u(t) is the input. The output of the system is x_2(t).
Find the state space model of this system linearized at the...
Homework Statement
http://img24.imageshack.us/img24/9028/72841137.jpg [Broken]
Homework Equations
Routh-Hurwitz Stability Criterion
The Attempt at a Solution
For first question, you just write the Routh Array, make sure that the first row is all positive and you get Kmax = 1. Simple enough...
You have to show your work if you want to receive detailed help.
Here's something to start you off. Recall the definition of odd parity. The parity bit is set to 0 if you have an odd numbers of ones and it is set to 0 if you have an even number of ones.
In your case, the last row (bottom)...
Homework Statement
Compute the Z-transform of
x[n] = (0.5)^{-n} * u[n-1]
And find the ROC (Region of Convergence)
Homework Equations
Z-Transform for discrete time
x(z) = \sum_{n=0}^\infty x[n] * z^{-n}
The Attempt at a Solution
To solve this, I used the definition of...
Find the region of operation and drain current in an NMOS transistor.
When they say region of operation, are they asking for the type of device (enhancement-mode or depletion-mode)? or the modes of operations (Cutoff, Triode or Saturation)?
Homework Statement
Consider a PNP Biploar Junction Transistor uniformly doped in each region. Sketch the enegy ban ddiagram for the case when the transistor is biased in
a)In thermal equilibrium
b)biased in the active region
c)biased in the cutoff (depletion) region
Homework...
As for the answer, the system is time invariant since the system does not explicitly depend on one of the inputs.
As for your method of approaching this, even if you shift the input and run the samples through the system, you'd get the same output as running the signal through the system...
For the implification statement, -->, this is the semantic of it:
If P is true, then the proposition is whatever Q is. Else, the proposition is true.
Here is an example : Suppose P is false, then p-->q turns out to be true regardless of what q is.
Suppose P is true and Q is true then...
Majesticman,
You must show some sort of work in order to receive help from us.
As you suggested, convert the current source into voltage source, I think that's the best way to go. Then write Node-Voltage equations on the inputs of the opamps (NEVER AT THE OUTPUTS), remembering your ideal...
Homework Statement
A continuous-time system has the input/output relationship
y(t) = \int_{-\infty}^{t} (t - \lambda + 2)x(\lambda) d\lambda
Determine the impulse response h(t) of the system
Homework Equations
Convolution theorems
y(t) = x(t) * h(t)
Where y(t) is the output...
OOPS, I didn't see the load there. forget about CE and CF.
If the roller is placed below the joint G, then in the Y direction, you know the summation of force turns out to be
F_AG + F_Roller = 0
So we can't say AG is a zero force member.
But, in the X direction, there's only one force you...
Zero force member CAN exist even if there is reaction. This is an example of it.
If you sum the forces on G, you know there's a force acting on the X direction by the roller, but not the Y direction. therefore,
Sum of force X = F_GF + F_Roller = 0
And if you try to sum the forces in the...
High Impedance in Verilog????
Homework Statement
Provide the correct Verilog text for encoding the following numerical values:
A) A 16 bit hexadecimal with all positions in the high impedance state:
B) An unsized hex number BEEF
Homework Equations
Verilog Problem. There is no...
If I understood your question correctly, you can do
y = (t>=0)
*Note : You have to predefine the vector t.
for the unit step function y = u(t)
Or use heaviside function.
Homework Statement
http://img166.imageshack.us/img166/1162/untitledte2.jpg [Broken]
Homework Equations
Convolution
y[n] = x[n] * h[n]
The Attempt at a Solution
I've never done convolutions going backwards..
right off the bat, I know I'll noly have 2 terms in the convolution...
When you do mesh-currents on a circuit, you assume the directions of the current. Meaning you can ignore the polarity of the resistors. Don't worry, the algebra will take care of itself and show if the direction of the current is inversed (You will see a negative sign in front of it, if that is...
Ugh.. this problem would be difficult with voltage divider, did you learn how to do Nodal Analysis? Because this problem would be surprisingly easy if you did. But I'm assuming you haven't.
Is the value given for that voltage supply?
Well at any rate, I think the way to tackle this problem...
In modern packet-switched networks, the source host segments long, application-layer messages (for example, an image or a music file) into smaller packets and sends the packets into the network. The receiver then reassembles the packets back into the original message. This process is known as...
Networking -Message Segmentation"
Homework Statement
Discuss the drawbacks of message segmentation.
Homework Equations
The Attempt at a Solution
None. period. I cannot think of a single drawback on this system. It is the best method to send packets over any other methods...
Sorry, Amazon still hasn't sent me the textbook yet, so I had a hard time doing the homework, searching through internet, which led me to this website at end :(
Thanks for your help
Homework Statement
A silicon sample is doped with 5.0 X 10^19 donor atoms/cm^3 and 5.0 X 10^19 acceptor atmos/cm^3
a)What is its resistivity?
b)Is this an insulator, conductor or semiconductor?
c)Is this intrinsic material?
Homework Equations
No clue.. this is where I need help
The...
Homework Statement
Silicon is doped with an Aluminum Concentration of 2 X 10^16 cm^-3
What are the free electron and hole concentrations at room temperature?
What are the electron and hole mobilities at 300K?
What is the majority carrier? What is the minority carrier?
Homework...
Homework Statement
http://img409.imageshack.us/img409/771/fluidcm5.jpg [Broken]
Homework Equations
F1/A1 = F2/A2
Pressure = Density * Height * Gravity
The Attempt at a Solution
I do not have a clue of how to solve this problem.
Can anyone start me off and provide me couple of...