02114nam 2200373 450 991013576330332120231206190608.00-7381-4271-910.1109/IEEESTD.1988.80999(CKB)3780000000089250(NjHacI)993780000000089250(EXLCZ)99378000000008925020231206d1988 uy 0engur|||||||||||txtrdacontentcrdamediacrrdacarrierANSI/IEEE Std 995-1987 IEEE Recommended Practice for Efficiency Determination of Alternating-Current Adjustable-Speed Drives : Part I - Load Commutated Inverter Synchronous Motor Drives /Institute of Electrical and Electronics EngineersPiscataway, NJ :IEEE,1988.1 online resource (30 pages)This recommended practice proposes a method for determining the efficiency of large, adjustable-speed AC motor-drive systems consisting of a load commutated inverter and a synchronous machine, in which a DC-linked converter is connected between the line and the load. This recommended practice is directed primarily to high-capacity systems (exceeding 1000 hp) and drive systems, which normally include equipments such as transformers, reactors, thyristor power converters, and synchronous machines. The method recommends that the existing test standards for the system equipments be used as reference, supplemented by test and calculations include herein to account for operating characteristics of the adjustable-speed drive systems.ANSI/IEEE Std 995-1987: IEEE Recommended Practice for Efficiency Determination of Alternating-Current Adjustable-Speed Drives. Part I - Load Commutated Inverter Synchronous Motor DrivesElectric invertersElectric motorsTestingElectric inverters.Electric motorsTesting.621.3815322NjHacINjHaclDOCUMENT9910135763303321ANSI2072434UNINA02212nam 2200469 450 991082983430332120231110233309.01-119-70581-91-119-70579-71-119-70585-1(MiAaPQ)EBC6846174(Au-PeEL)EBL6846174(CKB)20592826800041(OCoLC)1292355107(EXLCZ)992059282680004120220302d2022 uy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierLiquid crystals /Iam-Choon KhooThird edition.Hoboken, New Jersey :John Wiley & Sons, Inc.,[2022]©20221 online resource (419 pages)Wiley Series in Pure and Applied Optics Print version: Khoo, Iam-Choon Liquid Crystals Newark : John Wiley & Sons, Incorporated,c2022 9781119705826 Includes bibliographical references and index."Liquid crystals are a phase of matter whose order is intermediate between that of a liquid and that of a crystal. The molecules are typically rod-shaped organic moieties about 25 Angstroms in length and their ordering is a function of temperature. The nematic phase, for example, is characterized by the orientational order of the constituent molecules. The molecular orientation (and hence the material's optical properties) can be controlled with applied electric fields. Liquid crystal science and applications permeate many segments of society from large industrial displays to individual homes and offices. Non-display applications in nonlinear optics, optical communication and data/signal/image are receiving increasing attention and are growing at a rapid pace"--Provided by publisher.Wiley Series in Pure and Applied Optics Liquid crystalsCongressesLiquid crystals530.4/29Khoo Iam-Choon313994MiAaPQMiAaPQMiAaPQBOOK9910829834303321Liquid crystals881447UNINA