The Vietnam conflict began in the late 19th Century. France forcefully took ownership of the islands and made the Vietnamese islands a protectorate of France. The Viet Minh‚ or the League Of Independence was formed sometime around 1940. They were a group of people seeking independence from France. The French Government opposed this action and decided to try and stop the Viet Minh from advancing their political ideals into the rest of Vietnam. In the city of Dien Bien Phu‚ the Viet Minh surrounded
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Since the shaft of the motor moves only the number of degrees that it was designed for when each pulse is delivered‚ you can control the pulses that are sent and control the positioning and speed. The rotor of the motor produces torque from the interaction between the magnetic field in the stator and rotor. The strength of the magnetic fields is proportional to the amount of current sent to the stator and the number of turns in the windings. The stepper motor uses the theory of operation for magnets
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leading to the calculation of fields and currents in the rotor sheet and propulsion and levitation forces. Such problem can be tackled by vector potential or stream function approach. The present paper adopts the second approach. A second order partial differential equation has been formulated for calculation of stream function or current density in the rotor sheet. As the end effects have not been considered in the direction of width of the rotor sheet‚ the said formulation merges to a second order
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Steckerboard (Playboard) and rotors Steckerboard (Playboard): -Plug connections using a wire - A/C‚ B/R‚ Q/P‚ Z/L etc. Rotors: -26 rotational positions A-Z‚ or 01-26 (26 contacts that were wired in different ways for each rotor) - setting the 3 wheels in a certain position was the code for encrypting a message. Using The Enigma • Each enigma machine had to have the 3 rotors set in the same position in order to encode and decode message. In order to do this: 1) set up rotors to the specified wheel
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When the turning gear is engaged to / disengaged from the torbine generator rotor; iii) The reason why during turbine runup the turning gear mo- tor continues running for some time after the turning gear has disengaged from the turbine genemtor rotor; iv) The reason why during turbine rundown the turning gear motor is started up some time before the turning gear is actually needed to rotate the turbine generator rotor. c) For each of the operating states listed below‚ descnbe the ad-
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three-phase AC motors which run at synchronous speed‚ without slip. (In an induction motor the rotor must have some “slip”. The rotor speed must be less than‚ or lag behind‚ that of the rotating stator flux in order for current to be induced into the rotor. If an induction motor rotor were to achieve synchronous speed‚ no lines of force would cut through the rotor‚ so no current would be induced in the rotor and no torque would be developed.) Synchronous motors have the following characteristics: •
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A REPORT ON ASSEMBLY OF THE HIGH PRESSURE MODULE OF STEAM TURBINE BY APOORV MOHAN SHRIVASTAV UNDER THE GUIDANCE OF Shri. Jagarnath Orav Senior Manager (IMM) BHARAT HEAVY ELECTRICALS LIMITED‚ BHOPAL (MADHYA PRADESH) MANIPAL INSTITUTE OF TECHNOLOGY (A Constituent College of Manipal University) MANIPAL – 576104‚ KARNATAKA‚ INDIA CERTIFICATE This is to certify that this project report carried out by Mr. APOORV MOHAN SHRIVASTAV‚ student of B.E. AUTOMOBILE ENGINEERING‚ of MANIPAL
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Repulsion-induction motor 4. Synchronous motors (i) Reluctance motor (ii) Hysteresis motor 9.2 Single-Phase Induction Motors A single phase induction motor is very similar to a 3-phase squirrel cage induction motor. It has (i) a squirrel-cage rotor identical to a 3-phase motor and (ii) a single-phase winding on the stator. 227 Unlike a 3-phase induction motor‚ a single-phase induction motor is not selfstarting but requires some starting means. The single-phase stator winding produces a
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Analysis Of Rotor Disc Of Disc Brake Of Baja Sae 2013 Car Through Finite Element Analysis ISHWAR GUPTA1‚ GAURAV SAXENA2‚ VIKAS MODI3 1 M.Tech. (Automobile Engineering) Research Scholar RJIT BSF ACEDEMY Tekanpur‚ Gwalior‚ MP‚ India 2 Asst. Prof.‚ Automobile Engineering Department RJIT BSF ACEDEMY Tekanpur‚ Gwalior‚ MP‚ India 3 B.Tech. (Mechanical Engineering) ITM UNIVERSE Gwalior‚ MP‚ India Abstract— This paper deals with thermal analysis through finite element analysis of rotor disc of
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capability ‚ to overcome the drawback of LVRT operation of DFIG system using crowbar‚ a dynamic voltage restorer (DVR) is connected to the stator side to prevent the stator voltage fast changing‚ and then the rotor side converter (RSC) can be in normal operation. A mathematical model of the rotor voltage of DFIG during a symmetrical voltage dip is presented to describe the allowable changing rate of the stator voltage. A new connection structure of DVR is proposed where DVR and GSC share a DC capacitor
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