MTE 271 EXAM 4 WEAVER QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE 2026

MTE 271 EXAM 4 WEAVER QUESTIONS WITH VERIFIED SOLUTIONS LATEST UPDATE 2026 What factors determine the characteristic colors of metals? a)the characteristic color is determined by the distribution of wavelengths of the nonabsorbed light radiation that is reflected b)the characteristic color is determined by the distribution of wavelengths of the nonabsorbed light radiation that is transmitted through the material. c)the characteristic color is determined by the distribution of wavelengths of the absorbed light radiation that is transmitted through the material. - Answers the characteristic color is determined by the distribution of wavelengths of the nonabsorbed light radiation that is transmitted through the material What type of optical classification is characterized by the diffuse transmission of light? a)translucent b)transparent c)opaque - Answers translucent Which of these is NOT an interaction of light with a solid? a)coercivity b)absorption c)scattering d)reflection e)none of the above - Answers coercivity Polarization is a dipole alignment that is induced by ____. a)an applied temperature gradient b)an applied mechanical force c)an applied electric field - Answers an applied electric field Which defines the index of refraction? a)the speed of sound in vacuum over the speed of sound in a material b)the speed of light in a vacuum over the number of photoelectrons in a material c)the number of photoelectrons in a vacuum over the number of photoelectrons in a material d)the square root of the product of electric permittivity and magnetic permittivity in the material e)the speed of light in a vaccum over the speed of sound in a material - Answers the speed of light in a vacuum over the speed of light in a material We studied diffuse and specular reflection in class. Specular reflection is ____. a)best seen from a smooth surface b)best seen from a rough surface c)is independent of the surface topology - Answers best seen from a smooth surface The magnetic moment for a material originates from ____. a)electronic transfer b)electron spin c)electron orbital motion d)both a & b e)both b & c - Answers electron spin and electron orbital motion Corrosion requires _____. a)reduction reaction b)oxidation reaction c)decomposition reaction d)both a & b - Answers reduction reaction and oxidation reaction The gain of electrons is the ____. a)reduction reaction b)oxidation reaction c)decomposition reaction d)synthesis reaction e)replacement reaction - Answers reduction reaction Oxidation occurs at sites called ___. a)anodes b)cathodes - Answers anodes If you are using a sacrifical metal for galvanic corrosion protection, you should use a(n) ___ area anode next to a(n) ___ area cathode. a)small//large b)large//small c)equal//equal - Answers large//small Which of the following is a strategy for fighting corrosion? a)good design b)coatings c)inhibitors d)monitoring e)all of the above - Answers all of the above If one has a 1080 plain carbon steel, the carbon content is __. a)0.80 wt% b)8.00 wt% c)80 wt% d)10.8 wt% e)0.10 wt% - Answers 0.80 wt% In general, stainless steels are Fe-C alloys to which a high content ___ is added to provide passivation. a)Cr b)Mg c)Mo d)W - Answers Cr A steel has ___ carbon content than/as carbon. a)a lower b)a higher c)the same - Answers a lower