MTE 271 EXAM #1 .:» Please write your name on the cover sheet I CWID#: 112’13740 C7‚ av’" """\ • .;)j.‚~e ’J nol I ‚‚-) SEE BACK 1. a) (16 pts) What are the four major types of bonds in materials and briefly describe them? S~rt. s(Xci h’t.. elu?~.s (v-t-flj o{il’Cc-h~ed) stTnvj N-t ’‚t’w r 0. toM \;Jo- VI r; +o k + I. (o\(O\ltn+ - i. 0\H1YYl.s . \t{ ~ ’L‚ J:Q’V\’‚c. - OM Ol V\ e:kc t-f’lYVI / 3. M-e-l~\l;c_.- )V\..etaJs Von ~r \o~! WC\o...\s - c..lA.C\ $~~ ’-._./ r I
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Theory behind my experiment Thickness (cross sectional area of the wire)‚ length‚ and temperature all have some effect on the amount of resistance created in a wire. Another factor is the conductivity of the material we are using. Some metals are just more electrically conductive than others. As long as I use the same type of metal for each wire‚ my experiment will remain fair. Cross Sectional Area The thicker the wire‚ the less resistant it is. This is because there are more electrons
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References: K40W=400.00049087(1312)=62.11Wm°C By using Fourier’s Law‚ thermal conductivity‚ k can be calculated Yunus A. Cengel. “Heat Transfer A Practical Approach”‚ WBC McGraw-Hill (1998) “Linear Heat Conduction”
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Textiles in defense Dr. Muhammad Mushtaq Mangat www.mushtaqmangat.org Textiles in defence Defence forces on land‚ sea‚ or air throughout the world are heavily reliant on technical textiles of all types – whether woven‚ knitted‚ nonwoven‚ coated‚ laminated‚ or other composite forms Technical textiles offer invaluable properties for military land forces in particular‚ who are required to move‚ live‚ survive and fight in hostile environments. They have to carry or wear all the necessities
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heat transfer equipment. It therefor comes as no surprise that finding a way to make HTF’s more efficient is desirable in the scientific community. Research is being done to attempt to rectify this issue by adding materials with a high thermal conductivity (metal’s and metal oxides) to HTF’s in accordance with Maxwell’s heat transfer equations [1]. Until recently this problem was addressed by using micro scale solid particles with millimeter sizes which were blended into the HTF’s. Unfortunately
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CHEMICAL EFFECTS OF ELECTRIC CURRENT Conductivity of Liquid Electrolysis Electroplating www.excellup.com ©2009 send your queries to enquiry@excellup.com Finish Line & Beyond The materials‚ which allow electric current to pass through them‚ are good conductors of electricity. On the other hand‚ materials‚ which do not allow electric current to pass through them easily‚ are poor conductors of electricity. You know that metals such as copper and aluminum conduct electricity whereas materials
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excellent in both mechanical and electrical conductivity properties may have important applications in the electrical‚ electronic‚ military and construction industry. Although concrete has existed in various forms over most of recorded history‚ it is a material that still has opportunities for exciting developments. Over a number of years‚ many unsuccessful research efforts were made to develop concrete that could combine good electrical conductivity with the excellent engineering properties of
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solid substance that has a conductivity between that of an insulator and that of most metals‚ either due to the addition of an impurity or because of temperature effects. Devices made of semiconductors‚ notably silicon‚ are essential components of most electronic circuits. 1. A semiconductor is a material which has electrical conductivitybetween that of a conductor such as copper and that of an insulatorsuch as glass. semiconductor is a material whose electrical conductivity is between that of a conductor
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A FEASIBILITY STUDY TO AUTOMATE THE SCHOOL SYSTEM OF THE PAMANTASAN NG LUNGSOD NG MARIKINA PREPARED BY: SHIRLEY P. VILLANUEVA DEAN‚ COLLEGE OF INFORMATION TECHNOLOGY GENERAL INFORMATION PROJECT SUMMARY A. NAME OF THE FIRM/PROJECT Pamantasan ng Lungsod ng Marikina / Automated School System B. LOCATION PLMar is located in Concepcion‚ Marikina City. It has two satellite campuses namely Concepcion Elementary School and H. Bautista Elementary School. Classes in the main campus
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This is Because CNTs has unique properties such as high aspect ratio‚ lightweight‚ high mechanical strength‚ good thermal and electrical conductivity and excellent tribological behavior [21]. However‚ the results were not favorable due to the poor compatibility of POM with other materials as a result of high viscosity‚ especially with bulk materials [22]. Therefore‚ Yousef et al. (2013) develop
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