EXAM 2-2008 ANS KEY Sec2

EXAM 2-2008 ANS KEY Sec2 - MSE150.02 EXAM 2 SPR2008 EXAM II...

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MSE150.02 EXAM 2 SPR2008 EXAM II INTRODUCTION TO MATERIALS SCIENCE - MSE 150.02 SPRING 2008 HONOR CODE I PLEDGE MY HONOR THAT I HAVE NEITHER GIVEN OR RECEIVED AID ON THIS EXAMINATION. I FURTHER PLEDGE THAT, IF I HAVE REASON TO SUSPECT THAT THE CODE HAS BEEN VIOLATED, I HAVE TAKEN OR WILL TAKE ACTION AS OUTLINED IN THE CODE. SIGNATURE _________________________________ PRINT NAME ________________________________ DO NOT TURN THIS PAGE UNTIL 11:10 AM YOU HAVE 50 MINUTES TO COMPLETE THIS EXAM 1
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MSE150.02 EXAM 2 SPR2008 QUESTIONS 1-10 (1 point each) True or False 1- Electrical resistance is a materials property that depends upon bonding, microstructure, and temperature. F 2- The electrical conductivity of an intrinsic semiconductor increases with increasing temperature. T 3- The electrical conductivity of a metallic conductor increases with increasing temperature. F 4- The ultimate strength of ceramic materials is higher in compression than in tension. T 5- As a metal is cold worked, its ductility decreases. T 6- As a metal is cold worked, its strength decreases. F 7- The mechanical properties of uniaxial fiber reinforced composites are anisotropic . T 8- The yield strength of thermoplastic polymers decreases with greater cross-linking between the chains. F 9- Increasing the amount of crystalline character in a polymer will increase the density of the material. T 10-As the degree of polymerization is increased, the strength of the polymer decreases. F 2
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MSE150.02 EXAM 2 SPR2008 QUESTION 11
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