Multiple Choice Identify the
choice that best completes the statement or answers the question.


1.

On the stressstrain diagram, which axis would have unitless numbers (e.g.,
mm/mm or in/in or /)?
a.  Stress  c.  Both axes  b.  Strain  d.  Neither axis 


2.

On the stressstrain diagram, which axis would have units of force divided by
area?
a.  Stress  c.  Both axes  b.  Strain  d.  Neither axis 


3.

On the stressstrain diagram, which axis would have units of area divided by
force?
a.  Stress  c.  Both axes  b.  Strain  d.  Neither axis 


4.

Four solid, round bars are loaded in tension with the weights shown. In
which one is the greatest stress developed? Diameter, inches  Load, lbs.  1.0  1000  2.0  2000  3.0  3000  4.0  4000   
a.  The 1.0 diameter bar  c.  They are all experiencing the same stress  b.  The 4.0 diameter
bar  d.  The stress cannot be
determined 


5.

Four tensile test specimens are loaded with a load of 10,000 pounds. The
length of each specimen is recorded before and after it is loaded. Which specimen underwent the
highest strain? Original Length  New Length  1  1.1  2  2.2  3  3.3  4  4.4   
a.  The 1” long specimen  c.  The strain for all is the
same  b.  The 4” long specimen  d.  The strain cannot be calculated 


6.

A grams is a unit of ________?
a.  mass  c.  stress  b.  force  d.  strain 


7.

A kilonewton is a unit of ________?
a.  mass  c.  stress  b.  force  d.  strain 


8.

A megapascal is a unit of ________?
a.  mass  c.  stress  b.  force  d.  strain 


9.

PSI are units of ________?
a.  mass  c.  stress  b.  force  d.  strain 


10.

The kip is a unit of ________?
a.  mass  c.  stress  b.  force  d.  strain 


11.

The ksi is a unit of _______?
a.  mass  c.  stress  b.  force  d.  strain 



Use the diagram below to answer the following questions.


12.

What is the approximate UTS of the specimen?
a.  350 MPa  c.  560 MPa  b.  650 MPa  d.  0 MPa 


13.

The coordinates for two points on the elastic region of the diagram are shown
below. Calculate the modulus of elasticity for the elastic region.  Strain (/)  Stress (MPa)  Point A  0.000349  28  Point B  0.00204  262    
a.  138,380 MPa  c.  262 MPa  b.  7.22E06 MPa  d.  I can’t 
