Engr170 - ASSIGNMENTS - Spring 2020
ALWAYS SHOW YOUR WORK in written homework..

Updated: 04/27/2020

Updates since 01/21/2020:
• 04/27 Paper HW #4 due date, Paper #5, 6 added
• 03/24 CANVAS UPDATE.
• 03/24 Due Date CATE Qz #7 RESET
• 03/16 Paper HW #2,3,4 posted.
• 03/16 Online CATE Quiz #7 posted
• 03/16 Due Date Paper #1 reset
• 03/16 Due Date CATE Qz #7 set
• 03/07 Paper HW #1 Posted. Online CATE Quizzes #2, 3, 4 Due Dates reset
• 02/15 Online Quizzes #2, 3, 4 Due Dates
• 02/03 Moved due date to Wed., 02/05
• 01/27 Added HW #1
Homework: CATE Quizzes and PAPER Homework
No.
Date
Assigned/ Updated

Chapt.

Problems
and Notes/Modifications.
Answers to some Even # probs.
Due

April 8, 2020
Until further noticed, please check CANVAS for due dates.
The due dates below are current as of 04/08/20.
3/24/2020: Until further notice, for PAPER HW:
-Scan/take pictures of your HW
-Turn them into a PDF
-Submit the PDF online via CANVAS (if you can't, email to me).
-I will mark up and return via CANVAS/email
PAPER #4
03/16
RLC

Paper HW #4: 8 problems | Alexander's text |
Second-order Circuits
Prob. 8.1, 5, 16, 25, 33, 35, 47, 57
Grade will be based on 6 problems
-

 

Friday,
May 8,
11:59pm
CANVAS

PAPER #5
04/27
Sinusoids
and
Phasors

Paper HW #5: 8 problems | Alexander's text |
Sinusoids and Phasors
Prob. 9.5.,11abc,15ab,19ab, 35,43,47,59
Grade will be based on 7 problems
-

 

TBA
PAPER #6
04/27
AC Steady State

Paper HW #6: 9 problems | Alexander's text |
AC Steady-State
Prob. 10.1, 7, 9,25,27,41,49,58,69
Grade will be based on 7 problems
-

 

Start of
Exam #3
CATE #5
03/07
Ch 7

Online Quiz: 6 problems
- Dept. Src, Mesh (clas handout before Ex #1)
-Max Power (Thevenin review)
-AC, find current
-AC, find find voltage
-AC, find phased angle of current
-AC, find magnitude of voltage
http://login.yourlearningcoach.com/
-

 

TBA
CATE #6
03/07
Ch 8

Online Quiz: 6 problems
-AC Power, average power
-AC Power, VAR
-AC Power, Power factor
-AC Power, Choose Cap
-AC Power, Choose R
http://login.yourlearningcoach.com/
-

 

TBA
CATE 1
02/03
1, 2

Online Quiz #1: 6 problems
http://login.yourlearningcoach.com/
-

 

Wed., 2/5
midnight
CATE 2
02/15
2,3

Online Quiz #2: 6 problems
  KCL, Mesh Eqns, Mesh Analysis
http://login.yourlearningcoach.com/
-

 

Wed., 2/26 Midnight
CATE 3
02/15
3

Online Quiz #3: 6 problems:
  Mesh Analysis, Superposition, Node Analysis
http://login.yourlearningcoach.com/
-

 

Wed., 2/26
midnight
CATE 4
02/15
3

Online Qui #4z: 6 problems
  Node Analysis, Thevenin, Norton
http://login.yourlearningcoach.com/
-

 

Mon., 3/2 Midnight
PAPER #1
03/16
Ch4

Paper HW #1: 7 problems | Ulaby's Text:
Chapt 4: 1, 13, 20, 25, 46, 51, 52
Circuit Analysis and Design
-

 

Thurs, 4/02
11:00pm
CANVAS Upload
PAPER #2
03/16
C,L

Paper HW #2: 9 problems | Alexander's text |
Capacitors/Inductors
Prob. 1, 10, 11, 13, 17b, 25a, 40, 45, 48
Grade will be based on 7 problems
-

 

TBA
11:00pm
CANVAS Monday, 4/13

CATE Qz 7

YES,
Qz SEVEN

03/16
Ch 5

Online Quiz: 6 problems
-RL, Time constant
-RC, Time constant
-RL, Current at Infinity
-RC, Voltage at Infinity
-RC, Voltage across cap
-RL, Current through inductor
http://login.yourlearningcoach.com/
-

 

Wednesday,
April 16
11:59pm
CATE

PAPER #3
03/16
RC, RL

Paper HW #3: 8 problems | Alexander's text |
First-order Circuits
Prob. 5, 11, 17, 22, 39a, 42, 45, 59
Grade will be based on 6 problems
-

 

Exam #2
11:59pm
CANVAS Upload
           

 

Spring 2018 assignments below - from Alexander and Sadiku.
These are some types of problems I like.

Engr170 - ASSIGNMENTS - Spring 2018
 Alexander & Sadiku's Fundamentals of Electric Circuits, 5th ed.
                                       CAUTION: SUBJECT TO CHANGE.
Problems taken from the 5th edition (5e).
Asterisks ** indicate modifications to the 5e problems.
The 5e is on reserve in the MESA Center, the STEM Center, and the AHC Library.
Answers to odd problems are in the back of the book.
Recommendation: Study the REVIEW QUESTIONS at the end of the chapter.
These self-assessments should be a good starting place for the PROBLEMS in the chapter.
The Review Questions are NOT the "problems" assigned as HW.
ALWAYS SHOW YOUR WORK. No work = no credit.

Updated: 05/14/18

Updates since 01/08/2017:
•5/14 Note for Ch 11
•4/20 Due dates for #8-10
•2/17 Due date changes for #5-7
•2/12 Due date change for #3
•2/5 Due date change for #2a; Due date set for #2b
No.
Date
Assigned/ Updated

Chapt.

Problems
and Notes/Modifications.
Answers to some Even # probs.
Due
1
1/08/18
1

  2,  3,  7,  8,  15, 18,  23,  35   
      [8 probs]
Hint 1: use Integral Tables in Appendix as needed.
Hint 2: make sure the initial conditions in Prob #3 are met...not all answers in back may be correct.
Hint 3: For #35, the number after the decimal point represents MINUTES. e.g., 8.10 is 8:10 am, NOT 8.1 hrs.

-

 

Wed, 1/31
7:00pm
HW Box
(M-208)
2a
2/05/18
2

  3,  13,  14,  15,  21,  28**,  31**
     [7 probs]

For #28: Find V1, V2 and V3.
   Use: Vs=40 V; R1=14 ohms; R2=15 ohms; R3=10 ohms
For #31: Find ALL five (5) currents, not just i1 and i5.

 #28: 28 V,
      12 V,
      12 V

Mon, 2/12
7:00pm
HW Box
(M-208)
2b
2/05/18
2

43a,  49b,  51b,  67,  68,  74**
     [6 probs]

#74: Note that the fuse has resistance
-
 

Thurs, 2/15
6:00pm
HW Box
(M-208)
3
1/08/18
3

  Nodal:   6,  13,  17,  23    Mesh:  35,  41,  45,  66**
   [8 probs]
    Use Nodal Analysis for #7 through #22;
    Use Mesh Analysis for #35 and above.

For #66 SET UP (but DO NOT SOLVE) the system of equations in i1 to i5, that would be used to solve this problem. There should be 5 algebraic equations, each having the form of the numbered eqns listed in
Example 3.6 (i.e., Eqs. 3.6.1, 3.6.2., 3.6.3).
ALSO, set up the matrix equation.
-

Mon, 2/26
7:00pm
HW Box
(M-208)
4
1/08/18
4
   5,  13,  19,  27**,  41,  45, 47,  85
    [8 probs]

#27 Hint: Do not eliminate 12-ohm resistor when
    transforming circuit; you need to find the voltage
    across it.

All probs
are odd

Exam #1
5
2/17/18
5

  10,  17,  27,  39,  43,  61, 92
    [7 probs]

-

Mon., 3/26
7:00pm
HW Box
(M-208)
6
2/17/18
6
   1,  10,  13,  17b,  25,  30,  40,  45,  48,  60
    [10 probs]
#25 Do NOT use equivalent capacitances. "Show" from "scratch".



Mon., 4/2
7:00pm
HW Box
(M-208)
7
2/17/18
7

  5**, 11,  17,  22, 39a,  42,  45,  59
    [8 probs]

#5  FIND: i(t) for t>0.
     v = 24 V;  R1= 2 ohms;  R2= 5 ohms;  R3= 4 ohms;
     C = (1/3)F (one-third)
-

Exam #2
8
4/20/18
8

  1,  5,  16,  25**, 33, 35**,  47,  57
    [8 probs]

Prob #25:
   CALCULATE: io(t) and vo(t) for t > 0. 
   v=30 V, R1=2 ohm, R2 =8 ohm, L = 1 H; C = 0.25 F
Prob #35:    FIND vo(t) for t > 0
   V1=8 V;  V2=12 V;  R=2 ohms;  L = 1 H;  C =0.2 F 
-

Mon, 4/30
7:00pm
HW Box
(M-208)
9
4/20/18
9

  5,  11abc,  15ab,  19ab,  35,  43,  47,  59
    [8 probs]
All probs
are odd

Mon, 5/07
7:00pm
HW Box
(M-208)
10
4/20/18
10

  1,  7,  9,  25,  27,  41,  49,  57**,  69
     [9 probs]

Prob #41 Hint: use superposition since frequencies differ.
Prob #57
  FIND: Thevenin and Norton Equiv. Circuits
  VS=60/angle(120deg) V;
   R1=5 ohms;  XC= 10ohms;  R2= 2 ohms;  XL=20 ohms
All probs
are odd

Keep
Complete
by Exam #3
11
5/14/18
11

Chapter 11 will be discsussed briefly in class, but not covered on the exam. No HW is required.

 1,  5,  19 (Hint: Thevenin),  23**,  27,  39,  47ac
     [8 probs]

Prob #23:
 Find r.m.s. value of voltage  Vmax=10 V, T = 3 sec.
-

TBA
           

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