ENGR 211M CIRCUITS
HOMEWORK # 2
Solution
[1] For i = 10 cos( 40t ) , L = 0.01 H, and R = 9 , find the value of capacitance C that will
give a power factor of 1.0.
For pf = 1 :
11
1 1
= + j C
= + j 0 or
ZR
L R
1
1
C = 2 =
= 0.0625 F
2
L (40) 0.01
C =
1
Solution - CE 303: HW#15-, Practice Final (Open Book, 2 hrs)
Points for each problem are given in parenthesis along the right margin.
Give your final answers in the table whenever possible
Review the entire course material and then solve the following pra
CE343
GeotechnicalEngineeringandDesign
Ch 1. Introduction
LianyangZhang,PhD,P.E.
DepartmentofCEEM
TheUniversityofArizona
1
What is Geotechnical Engineering?
Geotechnical engineering is a branch of civil
engineering concerned with the engineering behavior
CE343: Geotechnical Engineering and Design
Mid-term Exam (Fall 2010)
Instructor: L. Zhang
Friday, September 24,2010
Duration: 1:00 - 2:50 pm
So 114 +.~f)n
NAME:
(Print)
Important: Assume Yw = 9.8 kN/m3 when necessary. You must clearly show all procedures
CE343: Geotechnical Engineering and Design
Mid-term Exam (Fall 2010)
Instructor: L. Zhang
Friday, September 24, 2010
NAME:
(Print)
Duration: 1:00 2:50 pm
_
(Last)
_
(First)
Important: Assume w = 9.8 kN/m3 when necessary. You must clearly show all procedur
CE343: GEOTECHNICAL ENGINEERING AND DESIGN - Fall 2013
Course Schedule
Instructor: Lianyang Zhang
Week
Date
Ch: Topic
HW
HW Due (*)
1M
26-Aug 1.0-1.2/Introduction
HW 1: 2.10, 2.11
6-Sep
W
28-Aug 2.0-2.7
F
30-Aug
2M
2-Sep
Labor Day - No Class
4.0-4.8
HW 2:
CE343
GeotechnicalEngineeringandDesign
Chapter 10
Shear Strength of Soils
LianyangZhang,PhD,P.E.
DepartmentofCEEM
TheUniversityofArizona
1
Failures Due To Shear
2
1
Failures Due To Shear
3
DeterminationofShearStrength
In the Laboratory
Direct shear test
T
CE343
GeotechnicalEngineeringandDesign
Chapter 4
Physical Soil States and
Soil Classification
LianyangZhang,PhD,P.E.
DepartmentofCEEM
TheUniversityofArizona
1
Phase Relationships
Soil is a three-phase material
Water
Air
Solid
2
1
Phase Relationships
Three
CE343
GeotechnicalEngineeringandDesign
Chapter 5
Soil Compaction
LianyangZhang,PhD,P.E.
DepartmentofCEEM
TheUniversityofArizona
1
Basic Concept
d =
Ws G s
Gs
=
=
w =
1 + wG / S w
V 1+ e
1+ w
s
How to increase d ?
Decrease e or w/S
2
1
Compaction Test
CE343
GeotechnicalEngineeringandDesign
Chapter 6
1D Flow of Water Through Soils
LianyangZhang,PhD,P.E.
DepartmentofCEEM
TheUniversityofArizona
1
Groundwater
2
1
Groundwater
3
Hydraulic Head
l
B
Soil
C
Flow ?
Table
4
2
Hydraulic Head
l
B
Soil
C
Flow ?
Tabl
CE343
GeotechnicalEngineeringandDesign
Chapter 7
Stresses, Strains and Elastic
Deformations of Soils
LianyangZhang,PhD,P.E.
DepartmentofCEEM
TheUniversityofArizona
1
Stresses and Strains
Why need to consider
stresses and strains?
2
1
Stresses and Strains
CE343
GeotechnicalEngineeringandDesign
Chapter 12
Shallow Foundations
(Sections12.0 12.6)
1
Learning Outcomes
Be able to estimate the safe bearing capacity of
soils for a shallow foundation supporting vertical
loads
loads.
2
1
Foundation
Foundation A stru
Ela, Spring 13
ChEE/CE 370R
Homework #2
Risk Assessment
Due: Monday, 2/4/13
If a question calls for a qualitative, non-numerical answer, your answer need not be
lengthy one to three sentences will typically suffice.
1. Do all parts of problem 4.4 in the t
Spring '13
ChEE/CE 370R
Homework #1
Population and Resources
Due: Friday, 1/25/13
If a question calls for a qualitative, non-numerical answer, your answer need not be
lengthy two or three sentences will typically suffice.
1. Do all parts of Problem 3.3 in
Ela, Spring 13
ChEE/CE 370R
Homework #3
Risk Assessment & Global Climate Change
Due: 2/20/13
1. Suppose an individual eats catfish from a river contaminated by tetrachloroethylene
(also known as PCE).
a) What concentration of PCE (mg/L) in the water would
Ela, Spring '13
ChEE/CE 370R
Homework #5
Atmospheric Stability and Gaussian Plume Model
Due: 3/4/13
1. Do all parts of problem 7.32 in the text.
2. Suppose a bonfire emits CO at the rate of 20 g/s on a clear night when the wind is
blowing at 2 m/s. The ef
Ela: Spring '13
ChEE/CE 370R
Homework #4
Tropospheric Criteria Pollutants
Due: Wed., 2/27/13
1. Do all parts of problem 7.1 in the text. Note the method for doing this was not covered
in class, but is assumed known from other courses (e.g., 370L). If you
Spring 13
ChEE/CE 370R
Homework #6
Air Pollution
Due: Friday, 3/22/13
Problem 4 is adapted from Davis and Masten, Principles of Environmental Engineering and
Science, 2004.
1. Do all parts of problem 7.34 in the text.
2. Do all parts of problem 7.38 in th
Spring 13
ChEE/CE 370R
Homework #7
BOD and Surface Water Quality
Due: Monday, 4/01/13
1. Do all parts of problem 5.6 in the text.
2. Do all parts of problem 5.8 in the text.
3. Do all parts of problem 5.10 in the text.
4. Do all parts of problem 5.13 in t
Spring 13
ChEE/CE 370R
Homework #8
Surface and Ground Water
Due: Monday, 4/8/13
1. Do all parts of problem 5.34 in the text.
2. Do all parts of problem 5.35 in the text.
3. Consider a lake with 100 x 106 m2 of surface area for which the only source of
pho
Spring 13
ChEE/CE 370R
Homework #10
Drinking Water Treatment
Due: Wednesday, 4/24/13
1. a) What is the difference between a primary and a secondary drinking water
standard?
b) What is the difference between a Maximum Contaminant Level (MCL) and a
Maximum
Spring 13
ChEE/CE 370R
Homework #9
Ground Water Quality
Due: Wednesday, 4/17/13
1. Do all parts of problem 5.46 in the text.
2. Do all parts of problem 5.51 in the text.
3. Do all parts of problem 5.55 in the text.
4. An aquifer has a hydraulic gradient o
ENGR 211-M Intro to Circuits, FALL 2007
HOMEWORK 1 Solution 38%
Due Date: Oct 10, 2007, 5:00pm
Please turn in your completed homeworks in Civil Engineering Bulding 206
Multigle Choice Questions 12 points each):
Q1. A light bulb, in essence, acts like
CE343
GeotechnicalEngineeringandDesign
Chapter 13
Deep (Pile) Foundations
1
Learning Outcomes
Be able to estimate the safe bearing capacity of
a single pile for supporting a vertical load.
2
1
Foundations
Foundation A structure
that transmits loads to
tha
ENGR 211 M CIRCUITS
HOMEWORK # 2
[1] Find the equivalent impedance of the circuit shown below.
[Solution]
[2] Find the magnitude of the source current if Vs = 7580 0 , P1 = 2W , P2 = 4W ,
Q1 = 10VAR , Q2 = 2VAR
[Solution]
Total load power Vs I s = (2 + j1
CE214-003 Statics
HW1 (Due Aug 31th, Wed)
Prob 1: Solve textbook problem 2-8.
Prob 2: Solve textbook problem 2-24.
Prob 3: Solve textbook problem 2-27.
Prob 4: Solve textbook problem 2-31.
Prob 5:
Prob 6: Two cables are tied together at C and are loaded a