question, and circle the corresponding answers carefully and completely.
"X" through the number corresponding to the two
1.5 points. Place an
There are 14 questions, and
to not wish to answer. If you answer more than 12 questions, then your first 12
will be graded.
1. The internal moment at any beam cross-section is equal to
(a) Rate of change of the shear function
(b) Integral of the shear function
(c) integral of the loading function
(d) None of the above
2. A solid cylindrical rod is subjected to pure torsion. Between the center of the cross-section and
the outermost fibers, the distribution of shear strain throughout the cross-section is
(a) Zero
(b) Constant
(c) Linear
(d) Parabolic
3. A simply-supported beam of length $L$ experiences deflection $v$ when subjected to a point load $P$
at its midspan. If the beam length is doubled, then the deflection compared to the earlier case
will be
(a) $v/4$
(b) $2v$
(c) $4v$
(d) $8v$
4. When subjected to a decrease in temperature, the magnitude of the normal stress in a fixed-
beam will
(a) Increase
(b) Decrease
(c) Be unaffected
(d) Either increase or decrease, depending on the material properties of the beam
5. If a column is designed with a factor of safety of 3, then the load at which the column
will be:
(a) $3P_{cr}$
(b) $3P_{allow}$
(c) $1/3P_{cr}$
(d) $1/3P_{allow}$
