# MIME Practice Exam Fall

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```					MIME 3300                      Exam 1                            Spring 2008
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Name, _____________________, Signature _____________________, Date, ______

1) (35 points) Using an algebraic approach find the angle of the crank
relative to the horizontal, 2, and the distance d. Show all your
derivations. All angles are in degrees and the lengths are in inches.

A
Connecting
rod, b=3               Slider
Crank,
3 = 1500
a=2
2                                             O4
O2

d

2) (30 points) Solve problem 1 using a graphic approach. Draw the
mechanism and explain all steps.

3) (35 points) Answer to the following questions briefly (up to 100 words).
you can do so if a true-false question is vague or ambiguous in your
opinion.

a. Grashof condition is satisfied for the following 4-bar linkage. (T-F)

3

2                                   4

b. A full joint constrains two degrees of freedom. (T-F)
c. A structure has zero degrees of freedom. (T-F)
d. We are performing position analysis of a four-bar linkage. There are
two solutions; an open and a crossed solution. The solution shown
below is the crossed solution. (T-F)
e. We want to construct a mechanism consisting of a single link to
move a link thought two positions A1B1 and A2B2 as shown below.
The center of rotation of the link is the intersection of the normal
bisectors of A1B1 and A2B2. (T-F)
B1

B2
A1
A2

f. In question e, the center of rotation of the link is the intersection of
the normal bisectors of A1A2 and B1B2. (T-F)
g. In question e, there is a unique four-bar mechanism that can
shown. (T-F)
h. Consider a crank-slider mechanism. The crank rotates
counterclockwise. The time ratio is equal to one. (T-F)

A
Connecting
rod                Slider
Crank                                        3
2

d

i. The crank-slider mechanism above has one degree of freedom. (T-F)
j. The stroke of the crank-slider mechanism above is equal to two times
the crank length. (T-F)

```
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