Page 1
MAAE2700 Final Exam page 1/17
C A R L E T O N
U N I V E R S I T Y
DURATION:
3
HOURS
No. of Students:
105
Department Name & Course Number:
Mechanical & Aerospace Engineering
MAAE2700
Instructor(s) Ronald E. Miller
Students
MUST
count the number of pages in this examination question paper
before
beginning to write, and
report any discrepancy immediately to a proctor.
This question paper has
17
pages.
This examination question paper
MAY NOT
be taken from the examination room.
In addition to this question paper, students require:
an examination booklet
yes ___ no _X_
a Scantron sheet
yes _X_ no ____
NAME:
______________________________________
STUDENT NUMBER:
__________________________
FINAL
EXAMINATION
April 2009
AUTHORIZED MEMORANDA
Answer
multiple choice
questions on the
scantron
sheet.
Answer all
other
questions directly on the examination paper, using the backs of the
sheets if necessary.
A faculty-approved, non-programmable calculator is allowed.
No notes, books or other materials are permitted.


Page 2
MAAE2700 Final Exam page 2/17
Value of each question is indicated for a total of 100 marks.
Questions 1-29 must be answered on the scantron sheet.
Anything
marked or written on pages 2-4 of this exam paper will not be graded!!!
Questions 1-11 are True/False questions (1 mark each).
There is no penalty for guessing.
1)
Elements tend to have increasing electronegativity as we move from left to right in
the periodic table.
a)
True
b)
False
2)
Pearlite is the name for the result of slowly cooling austenite with the eutectoid
composition.
a)
True
b)
False
3)
Martensitic stainless steel tends to be stronger than austenitic stainless steel, but not
as corrosion resistant.
a)
True
b)
False
4)
"Sensitized" stainless steel refers to the region of material near a weld where the
strength has been significantly reduced.
a)
True
b)
False
5)
Generally, as the average degree of polymerization decreases, the strength of a
polymer will increase.
a)
True
b)
False
6)
Covalent bonding is generally a stronger form of bonding than van der Waals
bonding.
a)
True
b)
False
7)
Strong ionic bonding leads to materials with excellent electrical conductivity.
a)
True
b)
False
8)
Allotropy and Polymorphism are terms used to refer to how some materials exist in
different crystal structures at different temperatures.
a)
True
b)
False
9)
Because there are so few vacancies in most crystalline solids, they rarely have any
effect on the creep behaviour of materials.
a)
True
b)
False
10)
At low temperature relative to a metal's melting temperature, a smaller average grain
diameter will lead to greater ductility.
a)
True
b)
False
11)
In general, increased carbon content will increase the strength and hardness of steel.
a)
True
b)
False
Questions 12-29 are multiple choice (1 mark each).
There are no penalties for guessing.
12)
Small amounts of carbon can be incorporated into BCC iron as
a)
a graphitic surface layer
b)
a network of dislocations
c)
an interstitial solid solution
d)
a substitutional solid solution


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