Introduction to AC Machines Dr. Suad Ibrahim Shahl ELECTRICAL MACHINES II Lecturer: Dr. Suad Ibrahim Shahl Syllabus I. II. III. IV. V. VI. VII. Introduction to AC Machine Synchronous Generators Synchronous Motors Three-Phase Induction Machines Three-Phase Induction Motors Induction Generators Induction Regulators Recommended Textbook : 1) M.G.Say Alternating Current Machines Pitman Pub. 2) A.S. Langsdorf Theory of AC Machinery McGRAW-HILL Pub. 1 Introduction to AC Machines Dr. Suad
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Electrical Machines Electrical Machine Stationary Transformer Rotating DC AC Motor Induction Generator Motor Generator Synchronous Motor Generator Electrical Generator / Motors An electric generator converts mechanical energy into electrical energy. An electric motor converts electrical energy into mechanical energy. Mechanical Input Electrical input ELECTRICAL MACHINES Generator ELECTRICAL MACHINES Motor Electrical Output Mechanical output
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Joel Bakan argues that corporation are “externalizing machines”. Based on The Corporation‚ develop and defend a thesis/idea concerning the ethical consequences of companies externalizing costs. The corporation is an assembly of many members into one body‚ a legal personality‚ working toward achievement of a special goal. It is an entity with its own rights and liabilities distinct from those of its members. Corporations‚ as seen throughout the business history‚ always try to accomplish
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Running head: LEASE VERSUS PURCHASE Lease versus Purchase Lease versus Purchase As business owners‚ or even working in accounting for a business‚ it is imperative to know the facts about making an informed business decision when it comes to purchasing or leasing equipment. Every company wants to maximize revenue and profit‚ and a decision such as whether to lease or purchase equipment could potentially make a significant difference. Pros to leasing Financially the needs of the company will
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Mobile Operating Systems (Mobile OS) Introduction: A mobile operating system‚ also called a mobile OS‚ is an operating system that is specifically designed to run on mobile devices such as mobile phones‚ smartphones‚ PDAs‚ tablet computers and other handheld devices.Much like the Linux or Windows operating system controls your desktop or laptop computer‚ a mobile operating system is the software platform on top of which other programs can run on mobile devices. The operating system is responsible
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Operating System Basics Functions of Operating Systems • An operating system is the software on a computer that manages the way different programs use its hardware‚ and regulates the ways that a user controls the computer. • Provide a user interface • Run programs • Organized file storage Types of Operating Systems • Real-time operating system – Very fast small OS – Built into a device – Respond quickly to user input – MP3 players
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Components of an Operating System In order to perform the actions requested by the computer’s users‚ an operating system must be able to communicate with those users. The portion of an operating system that handles this communication is often called the user interface. Older user interfaces‚ called shells‚ communicated with users through textual messages using a keyboard and monitor screen. More modern systems perform this task by means of a graphical user interface (GUI) in which objects to be
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Running Head: Operating Systems - Linux Operating Systems - Linux Prepared by Jackie Riddick University of Phoenix November 18‚ 2007 Operating Systems - Linux Brief History. Linus Torvalds created the Linux operating system in 1991 while he was still a student at the University of Helsinki in Finland. He developed and released the Linux kernel under the GNU General Public License so that its source code would be free to all and others could modify it to meet their specific needs. The
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Europe‚ Latin America‚ and Asia. Further‚ the company has also built a solid brand that is highly valued for its reliability. Since the launch of Apple’s iPhone in 2007‚ however‚ Nokia’s dominance has been challenged. Apple’s radical expertise in operating systems featured user-interface and functionality technology that changed the way other handset manufacturers thought about their design philosophies. Nokia has been slow to adapt to the smartphone revolution and has since witnessed a steady erosion
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Parañaque National High School ( Don Galo Annex ) Sta. Monica St. Don Galo.‚ Parañaque City Trurl’s Machine Submitted By: Rim‚ Ma. Christina IV- Juan Luna Submitted to: Kate Junniler ------------------------------------------------- Stanisław Lem ------------------------------------------------- Stanisław Lem 12 September 1921 – 27 March 2006) was a Polish writer of science fiction‚ philosophy and satire. His books have been translated into 41 languages and have sold over 27 million
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