A DC motor is a mechanically commutated electric motor powered from direct current (DC). The stator is stationary in space by definition and therefore so is its current. The current in the rotor is switched by the commutator to also be stationary in space. This is how the relative angle between the stator and rotor magnetic flux is maintained near 90 degrees‚ which generates the maximum torque. DC motors have a rotating armature winding but non-rotating armature magnetic field and a static field
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Summary After three years bailed out by the federal government‚ General Motor Co. set a goal of making $10 billion a year which is an unthinkable goal. In 2012‚ GM report 2011 net income about $8 billion and its highest ever campare to 2010 with gain nearly twice which is $4.7 billion are growth in China and strong profit in North America. GM also aims over next several years to raise its profit margin to 10% from current margin of about 6% and would be among the highest in the auto industry. The
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Huffman Trucking Maintenance Department‚ Smith Consulting developed entities and attributes for their Fleet Trucking Maintenance database. Unfortunately‚ the creator of the database was not available and the development of the database system was not able to be completed. D Team realizes that the development of a reliable database system is needed to provide for the tracking of scheduled and unscheduled maintenance for their fleet. Therefore‚ a database along with forms‚ tables‚ queries‚ and reports
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A SEMINAR REPORT ON TESTING OF BRAZING JOINT OF FIELD COILS CIRCUIT OF TRACTION MOTOR TYPE TAO-659 AND HS-15250A Submitted by: VARUN BALI Roll No. 09EI59(EE) B.Tech. 4th Year (Electrical Engineering) DEPARTMENT OF ELECTRICAL ENGINEERING INSTITUTE OF ENGINEERING & TECHNOLOGY MAHATMA JYOTIBA PHULE ROHILKHAND UNIVERSITY‚ BAREILLY (2012-2013) ACKNOLEDGEMENT I am extremely grateful to Mr. M. A. Ansari (Senior Lecturer)‚ Mr. Sanjay
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ENGINEERING AND MANAGEMENT (GPEM) Final assessment on Maintenance Management‚ by Marco Macchi‚ date 02-2011 Exercise #1 A Weibull analysis has been carried out on different components: the components under study are a pump and an electric motor (that is the motor needed in order to drive the pump); the analysis provides the reliability data for each component. • The pump has the following data: scale factor α = 8000 hours and shape factor β = 1. • The motor has the following data: scale factor α = 9000
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How many records does the file contain? How many fields are there per record? There are 5 filds‚ each with 7 records 2. What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure? Some of the project managers are mentioned several times‚ that would cause duplication in the city database. 3. If you wanted to produce a listing of the file contents by last name‚ area code‚ city‚ state‚ or zip code‚ how would
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Table Tennis Table tennis‚ also known as ping-pong‚ is a sport in which two or four players hit a lightweight‚ hollow ball back and forth using table tennis rackets. The game takes place on a hard table divided by a net. Except for the initial serve‚ players must allow a ball played toward them only one bounce on their side of the table and must return it so that it bounces on the opposite side. Points are scored when a player fails to return the ball within the rules. Play is fast and demands quick
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DATABASE SPECIFICATIONS 1. TABLE NAME : TBLGENDER FIELD NAME DATA TYPE SIZE CONSTRAINT REFERENCES GID IntN/A PK‚ IDENTITY NONE GDESC Varchar6 NOT NULL NONE 2. TABLE NAME: TBLGRDLVL FIELD NAME DATA TYPE SIZE CONSTRAINT REFERENCES GRDID IntN/A PRIMARY KEY‚IDENTITY NONE GRDLVLDESC VarChar15 NOT NULL NONE GRDSECTION Varchar15 NOT NULL NONE 3. TABLE NAME: TBLRANK FIELD NAME DATA TYPE SIZE CONSTRAINT REFERENCES RANKID IntN/A PRIMARY KEY‚IDENTITY NONE RANKDESC Varchar20 NOT NULL NONE 4.
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MANAGEMENT INFORMATION SYSTEMS Dormitory Database By Serpil Erdoğan and Barış Çimen May‚24‚2011 For: Assistant Professor Sona Mardikyan MIS132:Introduction to Database English Table of Contents Page Introduction..............................................................................................................................4 1.General View of the Database.........................................................
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Douglas Kleinsmith Lisa Rochford 8:00- 9:20 MW 18 March 2013 What Can You See? For many‚ you have to see something to believe it. However‚ when looking at the beliefs of a blind person‚ we discover that seeing may actually distort our beliefs. In Raymond Carver’s short story “Cathedral”‚ an unnamed narrator tells a story of meeting a blind man for the first time in his life. Before meeting Robert‚ the narrator tells us of how uncomfortable he is about him. If it had not been for his obligation
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