Although Helium exists in the atmosphere of Earth in small quantities‚ it is one of the most common element in the universe. It is a rare gas on earth. Helium was first discovered by Pierre Janssen in the spectrum of the sun during an eclipse in 1868. It was shortly identified as an element and was named by the chemist Sir Edward Frankland and the British astronomer Sir Joseph Norman Lockyer. Helium has an atomic number of 2 and an atomic weight of 4.002602. Helium is represented by the symbol
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efficient distribution and transmission network. High voltage gas insulated switchgear (GIS) is ideal for such applications. The range of application of SF₆ Gas Insulated Switchgear extends from voltage ratings of 72.5 kV up to 800 kV with breaking currents of up to 63 kA‚ and in special cases up to 80 kA. Both small transformer substations and large load- centre substations can be designed with GIS technology. The distinctive advantages of SF₆ Gas Insulated Switchgear are: compact‚ low weight‚ high reliability
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Hydroelectric power: The World’s Established Renewable Energy Resource For over a century‚ hydroelectric power has been used to generate electricity from falling water. The capacity to produce this energy is dependent on both the available flow and the height from which it falls. Hydroelectric dams create height for the water to fall and provide storage. In general‚ the higher the dam‚ the more potential energy is available. Building up behind a high dam‚ water accumulates potential energy. The
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for Q2 such that each charge will experience a zero force. Find this location. 2. A line charge of uniform charge density l forms a circle of radius b that lies in the xy-plane in air with its center at the origin. a) Find the electric field intensity E at the point (0‚ 0‚ h). b) At what value of h will E in part (a) be a maximum? What is this maximum? 3. Determine the work done in carrying a 5 C charge from P1 ( 1‚ 2‚ 4) to P2 (2‚ 8‚ 4) in the
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ELECTRIC DISCHARGE MACHINING INTRODUCTION * Sometimes it is referred to as spark machining‚ * Its a manufacturing process whereby a desired shape is obtained using electrical discharges (sparks). * Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes‚ separated by a dielectric liquid and subject to an electric voltage. * One of the electrodes – ‘tool-electrode’ or ‘tool’ or ‘electrode’. * Other electrode - workpiece-electrode
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General Electric Under Jack Welch John Francis Welch‚ Jr.‚ also known as “Jack”‚ became the CEO of General Electric in 1981 and maintained this title for the next 20 years until his retirement in 2001. He was widely known as a “national business hero” because he had a different approach on management that provided increasing results. For this very reason‚ many also despised his tactics. He was very aggressive in cutting out the weak‚ because he believed that it was holding back the company. One of
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the management of a petroleum economy: revisting the Nigeria crisis. A lecture presented at the second Edition of the the lectures in honour of Prof. G.A Olawoyin (SAN) News watch July 11‚ 2011 legal Framework for Appropriate funding of the oil and Gas industry
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Quezon National High School Mibando‚Poblacion‚Quezon‚Bukidnon Investigatory Project Electric Floor Wax Spreader (An Investigatory Project to be submitted on Intel Philippines Division level) Researchers: Presores Glenn Mark S. Lanzaderas Cristy Apple P. Ornillo Florenda G. Sabanal Regina M. Investigatory Project Adviser: Absuelo Shielo P. Table of Contents I. Abstract……………………………………………………………………………………..1 II. Acknowledgement…………………………………………………………………………..2 III. Introduction
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implemented methods‚ which are both common tools utilized by a system analyst. The Petron Gas Station Gapan Branch started the business way back 1995. Almost a decade and a half had passed and this gas station is standing still. The technology evolves fast but this gas station doesn’t seem to evolve with regards to the technology. The gas station wasn’t that aware of the computerized system other company is using. They are not aware yet of computerized inventory system‚ that is much faster‚ accurate
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employees have a technical attributes of at least a collge‚ and its subordinate employees to be atleast high school graduate. Other quilification that is considered during screening is an initial good moral character. I. Job descriptions Manager Gas Station Managers are responsible for day-to-day operations‚
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