Home Work 3
ME373
Due: November 5 (in class)
Instructions
1. You are required to solve all problems for credit; however, not all problems will be graded. A
random sample of problems will be selected for grading.
2. You will submit one report per group (ma
ENGR 202
FINAL EXAM
NAME
Problem #1. Use the node-voltage method to find VO in the circuit.
Problem #2. Use the mesh-current method to find the phasor current Ig in the
circuit shown.
Problem #3. Given the circuit below, find the total average power absor
Homework 5
ME373
Due Date: November 27 at Dearborn 112 by NOON.
Instructions
1. You are required to solve all problems for credit; however, not all problems will be
graded. A random sample of problems will be selected for grading.
2. You will submit one r
ENGR 202
MIDTERM #1
SPRING 2007
NAME
Problem #1. Given i(t) = 5 cos(400t 120o) A, determine the period of the
current, frequency in hertz and the time when the magnitude is 4 A. If a voltage
signal has a phase angle of +45o, what is the phase relationship
Home Work 2
ME373
Due: October 24 (in class)
Instructions
1. You are required to solve all problems for credit; however, not all problems will be graded. A random
sample of problems will be selected for grading.
2. You will submit one report per group (ma
1. Read Chapter 1, especially sections related to dynamic viscosity, how dynamic viscosity varies with temperature,
and classication of uids based on dynamic viscosity behavior in detail.
(a) What are non-Newtonian uids? Give two examples common non-Newto
ME 383 Winter 2014
Homework #2
Due: 1/23/2014
200 N
1600 N
400 mm dia.
B
D
250mm dia.
C
30 mm dia.
0.3 m
A
T1
T2
0.27 m
0.2 m
1. The figure shows a steel countershaft that supports two pulleys. The 400 -mm dia pulley
(located at B) receives power from a m
ENGR 321
Homework 5 due 2/11/14
1. The microstructure of a lead-tin alloy at 180C (355F) consists of primary and
eutectic structures. If the mass fractions of these two microconstituents are 0.57 and
0.43, respectively, determine the composition of the al
ME 383 Winter 2014
Homework #3
Due: 2/4/2014
1. Find the corrected endurance strength and draw the S-N diagram for a forged AISI1040 (normalized) steel bar with a 5in diameter that sees an axial load, operates at
room temperature, and at a reliability of
ENGR 321 Week 2 Homework Due Tuesday 1/21/14
1. Within a cubic unit cell, sketch the following directions: [ 1 10], [ 1 2 1], [0 1 2]
2. Determine the indices for the directions shown in the following cubic unit cell:
3. What are the indices for the two p
ENGR 321
Callister: Chapter 2
1. Atoms
Basic building block in materials science
We can characterize an atom by:
Z = atomic number = # of protons
A = atomic mass = total mass of atom (neutrons + protons)
In real numbers,
Protons and neutrons have a mass o
ME 383 Spring 2014
Homework #1
Due: 01/14/14
1. A vertical force P on the foot pedal of
the bell crank is required to produce a
tension T of 445 N in the vertical
control rod. Determine the
corresponding bearing reactions at A
and B.
T = 445N
2. Analyze t
ENGR 321
Callister: Chapter 9
How do we quantify and understand the microstructure of a material?
Why do we want to? The microstructure is strongly correlated to the properties of a
material (mechanical, thermal, electrical, etc.)
We characterize this usi
ENGR 321 Homework 1
1. Describe how materials science and engineering is relevant to your major. What is a
material of great importance to your field? What solid materials classification does it fall
under? What properties make it desirable for applicatio
ENGR 321
Callister: Chapter 3 (no planes/directions for hexagonal systems)
Definitions
Crystalline = atoms are situated on an a periodic array = long-range order
Non-crystalline = Amorphous = no long range order
Lattice = 3-D array of points
Unit Cell = t
ENGR 321
Callister: Chapter 4
Definition of Crystalline Defects
- Irregularity of the lattice at the atomic scale
- Classified according to dimensionality
0-D
Point Defect
1-D
Line Defect
2-D (3-D)
Interfacial/Boundary Defect
Point Defects
- Vacancy vacan
ENGR 321
Callister (8th Ed.): Chapter 1
Chapter 1
What is Materials Science and Engineering?
Materials Science Studies the relationship between structures and properties,
Develop new materials
Materials Engineering Process materials to achieve certain pro
ENGR 321
Callister: Chapter 3 (no planes/directions for hexagonal systems)
Part 2
Crystal Systems
Organized by symmetry
Lattice parameters
a, b, c cell lengths
, , cell angles
Table 3.2 in Callister
Cubic
a=b=c
Hexagonal
a=bc
Tetragonal
a=bc
Rhombohedral
ENGR 212 HOMEWORK #5 SOLUTIONS
Spring 2012
Due: Monday 21 May Exam #3: Wednesday 23 May
* Freebody and kinetic diagrams required on all problems.
#1. A pulley and two loads are connected by an inextensible cord, as shown.
Load A has a constant accelerat