EXAM2-2007-ans-key

EXAM2-2007-ans-key - EXAM II INTRODUCTION TO MATERIALS...

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EXAM II INTRODUCTION TO MATERIALS SCIENCE - MSE 150 SPRING 2007 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 ________________________________ CAST YOUR VOTE TO DECIDE WHETHER THERE WILL BE A BONUS QUIZ ON WEDNESDAY, MARCH 28, 2007 YES ______ NO ______ DO NOT TURN THIS PAGE UNTIL 10 MINUTES AFTER THE HOUR YOU HAVE 50 MINUTES TO COMPLETE THIS EXAM 1
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(4 points) Is the p-n junction in the schematic diagram in the forward biased or reverse biased condition? Forward What occurs at the junction between the p-type and n- type material in the forward biased condition? Recombination If the energy released at the junction in the forward biased condition is of the correct amount to emit photons of visible light, what is the name of this device? Light Emitting Diode (LED) For the following, clearly label the diagrams with the letters indicated in the problem. (5 points) Label the curves of the mechanical properties of brass as a function of cold work as: a) tensile strength b) yield strength c) elongation
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This note was uploaded on 03/30/2009 for the course MSE 150 taught by Professor Wittig during the Spring '07 term at Vanderbilt.

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EXAM2-2007-ans-key - EXAM II INTRODUCTION TO MATERIALS...

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