Abstract
Direct-sequence code-division multiple access (DS-CDMA) has been adopted in second and third-generation cellular mobile standards. Users are separated in CDMA system by use of different signatures for ach user. In CDMA system, many users share the transmission media so that signals from different users are superimposed causing interference. This report outlines a multiple access scheme in which interleaving is the only means of user separation. It is a special form of CDMA; it inherits many advantages of CDMA such as dynamic ....etc

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.INTRODUCTION
Magnetic levitation is the latest in transportation technology and has been the interest of many countries around the world. The idea has been around since 1904 when Robert Goddard, an American Rocket scientist, created a theory that trains could be lifted off the tracks by the use of electromagnetic rails. Many assumptions and ideas were brought about throughout the following years, but it was not until the 1970â„¢s that Japan and Germany showed interest in it and began researching and designing.
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Automatic meter reading (AMR) is the technology of automatically collecting data from energy metering devices (water, gas, and electric) and transferring that data to a central database for billing and/or analyzing ....etc

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1. While soldering what action is applied on solder?
(A)Capillary action(B)Gravitational force
(C )Electromagnetic force(D)Magnetic action

2.Which one of these a pressure welding method?
(A)ARC welding(B)Gas welding
(C )Resistance welding(D)Thermit(fusion) 

3.Which of the following is not an insulator?
(A)Gold(B)Glass
(C )Mica(D)Wood

4.Which type of fire extinguisher is used in a welding shop?
(A)Form type extinguisher(B) CO2 extinguisher
(C ) Dry powder extinguisher(D) Halon extinguisher

5.The term used ....etc

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The magnetic amplifier (colloquially known as the mag amp) is an electromagnetic device for amplifying electrical signals. The magnetic amplifier was invented early in the 20th century, and was used as an alternative to vacuum tube amplifiers where robustness and high current capacity were required. World War II Germany perfected this type of amplifier, and it was used for instance in the V-2 rocket. The magnetic amplifier has now been largely superseded by the transistor-based amplifier, except in a few safety critical, high reliability or ....etc

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What is Blue eyes?
The U.S. computer giant,IBM has been conducting research on the Blue Eyes technology at its Almaden Research Center (ARC) in San Jose, Calif., since 1997. The ARC is IBM's main laboratory for basic research. The primary objective of the research is to give a computer the ability of the human being to assess a situation by using the senses of sight, hearing and touch.
Animal survival depends on highly developed sensory abilities. Likewise, human cognition depends on highly developed abilities to perceive, integrate, and in ....etc

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PRESENTED BY
SHAYISTHA.N


INTRODUCTION
* Use of air gap magnetic flux probes-proven effective in detection of generator winding shorted turns
* Improve quality of predictive maintenance decision when or if to perform rework
* Can pinpoint the no: & location(pole & coil) of shorted turns without having to take generator offline
EFFECTS OF SHORTED TURNS IN ROTOR WINDINGS
* If percentage of total turns shorted out is small, the generator may be able to run at rated load for years without further proble ....etc

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Crystalline silicon solar cell manufacturing requires vacuum-based processing tools for many critical steps, from mono- to polycrystalline silicon growth to thin-film depositions on silicon wafers. Manufacturing efficiencies can be optimized by considering cost-of-ownership (CoO) parameters for vacuum subsystems based on dry pumps. Careful attention to vacuum systems can make a significant contribution to reduced costs, ultimately permitting profitable production of solar cells that will encourage widespread market growth.

Solar energy is r ....etc

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Welding Processes
EN358 – Ship Structures
A Brief History of Welding
Late 19th Century
Scientists/engineers apply advances in electricity to heat and/or join metals (Le Chatelier, Joule, etc.)
Early 20th Century
Prior to WWI welding was not trusted as a method to join two metals due to crack issues
1930’s and 40’s
Industrial welding gains acceptance and is used extensively in the war effort to build tanks, aircraft, ships, etc.
Modern Welding
the nuclear/space age helps bring welding from an art to a s ....etc

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Thanks for your code............................................................ ....etc

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