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By K. M. Gupta, Nishu Gupta, Ashutosh Tiwari

This complete and exact publication is meant to hide the titanic and fast-growing box of electric and digital fabrics and their engineering in line with smooth developments.   simple and pre-requisite info has been incorporated for simple transition to extra complicated themes. most modern advancements in numerous fields of fabrics and their sciences/engineering, processing and functions were integrated. most recent issues like PLZT, vacuum as insulator, fiber-optics, extreme temperature superconductors, clever fabrics, ferromagnetic semiconductors and so on. are lined. Illustrations and examples surround diversified engineering disciplines equivalent to robotics, electric, mechanical, electronics, instrumentation and regulate, desktop, and their inter-disciplinary branches. quite a few fabrics starting from iridium to garnets, microelectronics, micro alloys to reminiscence units, left-handed fabrics, complex and futuristic fabrics are defined in detail.

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Anurag Sant, the publishers of the Umesh Publications (4230/1 Ansari Road, Daryaganj, Delhi-110002) India, for being kind enough to provide some literature support and valuable information that proved very useful in preparing this book. Author (Dr. K. M. Gupta) thanks especially Mr. Anurag Sant for his courteous gesture. Dr. M. Gupta xxxvii About the Authors Dr. M. Gupta is a Professor in the Department of Applied Mechanics, Motilal Nehru National Institute of Technology, Allahabad. He has over 38 years of teaching, research and consultancy experience.

Appearance of any machine, equipment, or device provides elegancy and aesthetics to the product. 6 Operational Requirements of Electrical and Electronic Materials Electrical materials have to satisfy widely varying needs of diff erent operational parameters. These parameters are voltage, current, temperature, frequency, polarization, remanance, resistivity, emission etc. Accordingly, the materials have to be suitable for meeting the following requirements. • • • • • • high and low voltage applications high and low conduction applications high and low temperature services high and low frequency services high and low resistivity devices high and low emission applications, etc.

1. Macro-structure, and 2. Micro-structure The macro-structure can be observed with naked eye or with a low magnification using an optical microscope. Etched and polished crystals of cast brass can be directly seen with naked eyes. 1 mm. This is known as limit of resolution of the human eye. 1 mm, the human eye will see them as one line. The microstructural levels may further be classified as below. 1. 2. 3. 4.

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