are three external factors that influence the resistance in a conductor. Thickness (cross sectional area of the wire)‚ length‚ and temperature all have some effect on the amount of resistance created in a conductor. The fourth factor is the conductivity of the material we are using. Some metals are just more electrically conductive than others. This however‚ is considered an internal factor rather than an external one. Cross Sectional Area: The cross-sectional area of a conductor (thickness)
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Introduction In thermo-fluid sciences‚ the measurement of temperature plays a key role. During this lab we tested two different types of thermocouples‚ a T-type and a J-type. Measuring with a thermocouple allows us to measure the temperature difference between two junctions. There are several laws that deal with the thermocouples and reading of temperatures. We use the first law of thermodynamics which states that there is a conservation of energy. Also the law of homogenous metals is in
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THERMAL EQUILIBRIUM AND TEMPERATURE Two systems are said to be in thermal equilibrium with each other‚ if they are at the same temperature. ZEROTH LAW OF THERMODYNAMICS It states that if two systems A and B are in thermal equilibrium with a third system C‚ then A and B must be in thermal equilibrium with each other. Fig. 1.01 shows two systems A and B separated by an adiabatic wall (a wall which does not allow hear flow).The two systems are placed in contact
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filaments. Yarn is made of continuous‚ often plied strands of natural or man-made fibers or filaments. Carded and needlepunched non-wovens offer very high loft (low density) at very low cost. Braided products are used for tubular composite structures‚ thermal insulation‚ and in other applications. Webbing includes ribbons‚ strapping‚ and tape. Blankets or batts (batting) are made of thick layers of woven and/or non-woven fabric sheets. Sleeves or wraps (sleeving) are flexible‚ fibrous refractory products
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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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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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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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Essay on pollution:Environmental pollution is the biggest menace to the human race on this planer today and this article is an essay on pollution describing its effects on human beings and whole environment. Basically pollution means addition of impurities to the environment which consists of earth‚ water‚ air‚ plants and animals. If we kept on polluting them then for sure the existence of human and nature will be hampered.Firstly there is a growing amount of atmospheric degradation which causes
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Lab Report Electrical Conductivity Introduction There are some substances that are capable of conducting electricity‚ and the reason they conduct electricity is because of the type of compound the substance is. Electrolytes or any ionic compound conduct electricity and nonelectrolytes do not conduct electricity. An Ionic compound is formed from the electrical attraction between anions and cations‚ typically a metal with a non-metal‚ except hydrogen. When an ionic compound forms‚ the anion
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First Effect Rising Film Second Effect Rising Film Laboratory Steam Generator Make & Model HT10XC HT14 HT12 HT30XC HT33 HT11 UOP20XSTM UOP22-11 UOP22-22 UOP10-C 9 Heat Transfer Service Unit H111 S. No. 1 2 3 4 5 6 7 10 11 Equipment Thermal Conductivity of Liquid And Gaseous Unit Free and Forced Convection from Flat‚ Dimmed and Finned Plates H111H H111P 12 Laminar / Viscous Flow Heat Exchanger H971 13 Boiler Control Demonstration Unit P7665+ P7667 PC Manufacture Qty Armfield Armfield
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