1
Logic and Proofs
1.1
1.
Propositions and Connectives
(a) true
(e) false
(b) false
(f) false
(c) true
(g) false
(d) false
(h) false
2. (a) Not a proposition
(b) False proposition
(c) Not a proposition. It would be a proposition if a value for x had been
,
ECE 221
Electric Circuits
*
Exam II  50 points total
Fall 2011
* Part I (30 points) consists of 2 long problems. * Write your answers in the spaces provided and shovi
your work in the area below. * All resistors are in Q. *
1 . ( 1 0 pts) Find the Thev
Electric Circuits
Fall 2011
~ECE221
Exam II  50 points total
* Part I (30 points) consists of2long problems. * Write your answers in the spaces provided and show
your work in the area below. * All resistors are in Q. *
1. (10 pts) Find the Thevenin and
Electric Circuits
ECE 22] Exam I 50 points total Fall 2014
_
For the rst three problems, write your answers in the spaces provided and show your work in the
blank areas to get full credit. All resistors on the test are in Q.

I. (8 pts) Use KCL and KVL e
Electric Circuits
ECE221
C9
Fall 2013
Exam II  50 points total
Write your answers in the spaces provided and show your work in the blank areas. You must show your
work to get full credit. All resistors on the test are in Q. Don't forget your name and you
Electric Circuits
ECE 221 Exam II 50 points total Fall 2014

_
1. (14 pts) The following seven questions area oints eaa . Circle the correct answer or ll in the blank.
Parts 3.) and b) refer to this circuit:
a) Which of the following equations at the V
Electric Circuits
Exam 1150 points total
ECE 221
FaU2012
* Part I (30 points) consists of 2 long problems. * Write your answers in the spaces provided and show
your work in the area below. * All resistors are in Q. *
1 . ( 1 0 p t s ) F i n d t h e T h e