Sample multiple choice and True or False questions from a past midterm exam
1. Select one answer for each of the following multiple-choice questions.
1.1.
A.
B.
C.
D.
What is the most important property/characteristic of a structural material?
Can resist
Notes for the Midterm Exam
When, Where,.?
Tues, Feb 14 8:30 - 10:20 am
RCH 301(about 80 students), DWE 2527(about
45 students)
I will assign the students to the above
classrooms and will email you the details (and
announce it on LEARN) next week.
What
Student Name_
Student ID Number_
4
1.a. Explain why FCC metals are often recommended for use at low temperatures,
particularly when any sudden loading of the part is expected.
4
1.b. A tensile stress of 120 MPa is applied to a 1 m- long steel bar. Assumin
Student Name_
Student ID _
1. (a) Write the general structural difference between ceramics, glasses and glass ceramics.
(b) Write the name of the primary bound in:
(i) diamond (C),
(ii) copper (Cu).
(5)
2. Lithium (Li) has a BCC structure with a lattice p
LABORATORY EXERCISE # 4
Polymers and Ceramics
INTRODUCTION
The use of polymers (plastics), ceramics and other non-metallic materials in engineering
applications continues to increase tremendously. Materials such as polyethylene, nylon, Teflon,
alumina, si
Department of Mechanical and Mechatronics Engineering
University of Waterloo
Laboratory Health and Safety Manual
Contacts, Regulations and Guidelines
For
Undergraduate Students
This Manual and Regulations are applicable to:
All Undergraduate students work
ME 115: W12 Midterm Solutions
Q1:
1.1
1.2
Al has a higher elastic strain for the same stress.
Reason:
According to Hooks law
, therefore a
smaller elastic modulus will result in a higher
strain.
Or
The interatomic spacing in Al can be increased
more for a
Assignment 3
Hints to solve problems
(Note: these are not full solutions)
6.21. Determine the stress. If the stress is higher than YS the bar will plastically deform. If stress is less
than UTS it will not neck.
a) Yes
b) No
6.22. a) Yes Yes
b) Plastic de
Assignment 4
Hints to solve problems
(Note: these are not full solutions)
7.2. Use Equation 7-1. 2a=0.001 cm
No (stress to fail is much larger than UTS).
7.4. Can be found using Eq. 7.1 in the text book:
7.23. Using Eq. 7.13 a and b:
F = 86.4N
7.27. After
Assignment 5
Hints to solve problems
(Note: these are not full solutions)
8-9.
Use Equation 8-1/8-2 and Table 8-1.
n = 0.51, which is typical of FCC metals.
8-13.
Relate to true stress/strain values (Eqs 6-13, 6-14) and use Eq 8-1
8-21.
Use Eq 8-6
8-24.
U
Assignment 6
Hints to solve problems
(Note: these are not full solutions)
16-10. Use Equation 16-1.
a)
b)
MW chains = 750 000 g/mol
20
8.03x10 chains
16-12. Use Equations 16-2, 16-3, and 16-1
a)
b)
MW w = 11193 g/mol
MW n = 9285 g/mol
DPw = 211
DPn = 175
Department of Mechanical
& Mechatronics Engineering
ME 115 - The Structure and Properties of Materials
Project and Laboratory Manual
Winter 2012
Instructor:
Professor Shahrzad Esmaeili
(E5-3016), ext. 37536, shahrzad@uwaterloo.ca
Lab Supervisor:
Norval Wi
ME115 Winter 2015 Final Exam and Tips
1
Final Date and Venue:
On Monday, April 20
At 4:00-6:30PM (2.5 hr, 5 question exam)
Venue PAC 11,12
Note that:
I will give the exam details during Wednesday class (today)!
No cheat sheet will be allowed but a formula