Note Created By Jignesh.Parmar www.jiguparmar.com THE NEED FOR A CABLE TRAY SYSTEM: • • • As technology advances‚ so too does the need for effective support systems. Today‚ plants and buildings are moving more and more towards automation. Requiring complex system of wiring and cable laying. Old methods of cable management become obsolete under these demanding conditions. 1. Regular inspections must be carried out‚ & faults located 2. Many entry/exit points are required 3. New cables
Premium Zinc Cable Corrosion
increase a material ’s corrosion resistance. However‚ some corrosion mechanisms are less visible and less predictable. Corrosion Process Elements are rarely found in a pure metal state. Rather they are found in chemical combinations with one or more nonmetallic elements. These chemical combinations are commonly known as ore. Significant energy must be expended to reduce the ore to pure metal. This energy can be applied via metallurgical or chemical means and is done so in the process called smelting and
Premium Corrosion
shades of olive. It is opake‚ very friable‚ and its powder does not scratch glass.” After carrying out a number of chemical reactions to verify the uniqueness of the substance‚ Davy wrote‚ “there is strong reason to consider the boracic basis as metallic in nature‚ and I venture to propose for it the name of boracium.” (2) Neither party had‚ in fact‚ produced pure boron. Their samples were only about 60% pure. In 1909‚ American chemist Ezekiel Weintraub was able to produce 99% pure boron‚ by reducing
Premium
earth’s crust that can be extracted and processed at an affordable cost. Non-renewable resources are mineral and energy resources such as coal‚ oil‚ gold‚ and copper that take a long period of time to produce. * Metallic Mineral Resources – iron‚ copper‚ aluminum * Nonmetallic Mineral Resources – salt‚ gypsum‚ clay‚ sand‚ phosphates‚ water and soil. * Energy resource: coal‚ oil‚ natural gas and uranium * Identified Resources – deposits of a nonrenewable mineral resource that have a
Premium Mineral Aluminium Mining
cable‚ device or fiber. A connector is a mechanical device used to align and join two conductors or fibers together to provide a means for attaching and decoupling it to a transmitter‚ receiver‚ or another fiber. 5. Conduit- A rigid or flexible metallic or nonmetallic raceway of circular cross section in which cables are housed for protection and to prevent burning cable from spreading flames or smoke in the event of a fire. 6. Racks- A frame-like structure where patch panels‚ switches‚ and other network
Premium Optical fiber Electromagnetic radiation Light
Discussion no. 2 The Nomenclature of Inorganic Compounds Discussion no. 3 The Periodic Table of Elements Sta. Maria‚ Yza Suaco‚ Trisha Marie T. Teves‚ Joan Marie Vale‚ Kate IN-9 Group 9 I. Introduction Representing molecules as images allows us to impart a great deal of information concerning molecular structure. But these molecules can also be named‚ and there are occasions when this is more convenient than drawing a picture. In the early days of chemistry‚ the list of known compounds
Free Periodic table Atom Chemistry
hold matter together are called chemical bonds. There are four major types of bonds. We need to learn in detail about these bonds and how they influence the properties of matter. The four major types of bonds are: I. Ionic Bonds III. Metallic Bonds II. Covalent Bonds IV. Intermolecular (van der Waals) forces Ionic Bonds The ionic bond is formed by the attraction between oppositely charged ions. Ionic bonds are formed between metals and nonmetals. Remember that metal atoms lose
Premium Covalent bond Ionic bond Atom
activities‚ particularly those that destroy vegetation‚ accelerate erosion. 2. List three types of mineral resources‚ and give examples of each. Clarify the relationship between identified resources and reserves. ● Metallic mineral resources- iron‚ copper‚ aluminum ● Nonmetallic mineral resources- salt‚ clay‚ sand‚ phosphates‚ and soil ● Energy Resources- coal‚ oil‚ natural gas‚ and uranium Identified resources deposits of a nonrenewable mineral resource with a known location‚ quantity and
Premium Plate tectonics Mining
cities than in rural areas • Populations are affected by geologic hazards and rely on natural resources • Geologic hazards are natural processes that adversely affect people • Natural resources addressed by geology include: • Water‚ soil‚ metallic and nonmetallic minerals‚ and energy © 2014 Pearson Education‚ Inc. The Development of Geology • The nature of Earth has been a focus of study for centuries • Catastrophism—Earth’s landscapes were shaped primarily by catastrophes • Uniformitarianism—the
Premium Geology Earth Igneous rock
Issamel Velazquez Human Geo 4/12/13 P3 Chapter 14 Key Issue 1 1. A resource is a substance in the environment that is useful to people‚ is economically and technologically feasible to access‚ and is socially acceptable to use. 2. The problem is that most resources are limited‚ and Earth has a tremendous number of consumers. 3. Geographers observe two major misuses of resources: We deplete scarce resources‚ especially petroleum‚ natural gas‚ and coal‚ for energy production. We destroy
Premium Petroleum Peak oil Natural gas