Sample Midterm 2.pdf - ECE 333 UMass Amherst Sample Midterm 2(Questions are from 2015 2016 and 2019 midterms with slight modifications 1(25 points

Sample Midterm 2.pdf - ECE 333 UMass Amherst Sample Midterm...

This preview shows page 1 - 3 out of 9 pages.

ECE 333 UMass Amherst 1 Sample Midterm 2 (Questions are from 2015, 2016, and 2019 midterms with slight modifications) 1.(25 points) Through a generator resistance of Rg= 150 (), a dc voltage of 20 (V) is applied to a 50-transmission line of length lat t= 0. At the load end (z= l), an infinitely long transmission line with a characteristic impedance Z1= 100 () is connected. Step wave propagation in the 50-line (i.e., 0 ≤ zl) is of interest. In your sketches, clearly indicate the numerical value of the level or change of voltage or current due to each reflected wave. (a)(9pt) For 0 ≤ zland 0 ≤ t≤ 5T(T= l/up; up= speed of propagation), draw separate voltage and current bounce diagrams. (b)(8pt) At the mid-point (z= l/2), sketch the voltage waveform V(z= l/2, t) with respect to tfor 0 ≤ t≤ 5T. (c)(8pt) At the instant t= 1.5T, sketch the current waveform I(z, t= 1.5T) with respect to zfor 0 ≤ zl. 2.Z0= 50 20 V z+ Rg= 150 t = 0 l0 Z1= 100
Background image
ECE 333 UMass Amherst 2 3.
Background image
Image of page 3

You've reached the end of your free preview.

Want to read all 9 pages?

  • Fall '09

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors