Bøker av Abhishek Chauhan

Problem-solving is just like other skills we need to master in life. To be good at it, we need to practice it with the right approach. In view of this, DESM & NCERT has developed Exemplar Problems to provide a large number of quality problems.Get your hands on the latest edition of "NCERT EXEMPLAR PROBLEMS-SOLUTIONS: MATHEMATICS" which has been designed for class XI students to master the basic technique of problem-solving. This book contains Explanatory & Accurate Solutions to all the questions given in the NCERT Exemplar mathematics book. Besides this, two additional features, that is, Thinking Process and Note have been included to enhance the learning and thinking abilities of students. Acquiring this book will be highly useful to score best in school examinations and build a foundation for entrance examinations. It offers:An all-inclusive book of NCERT Exemplar Problem-SolutionExplanatory & accurate solutions to all questionsA thinking process to tell how to solve a problemNotes are provided with special points A great tool to learn each concept of mathematics in a complete mannerTABLE OF CONTENT:Sets, Relations and Functions, Trigonometric Functions, Principle of Mathematical Induction, Complex Numbers and Quadratic Equations, Linear Inequalities, Permutations and Combinations, Binomial Theorem, Sequence and Series, Straight Lines, Conic Sections, Introduction of Three Dimensional Geometry, Limits and Derivations, Mathematical Reasoning, Statistics, Probability

Power supply quality concerns are the consequences of the increasing use of solid state switching devices, power electronically switched loads, unbalanced power systems, lightning controls, computer and data processing equipment, as well as industrial plant rectifiers and inverters. In this book, special prominence is given to the degrading of power quality due to unbalanced power supply. Moreover, the impact of unbalanced voltage on the performance of three-phase induction motors are also underlined. Three-phase induction motors are broadly used in diverse industrial applications while unbalances in supply voltage are responsible for various ailing impacts on their performance. Furthermore, the variation of performance parameters of three-phase induction motors have been analysed. Additionally, various existing methods for the assessment of the performance induction motor under the supply voltage unbalance have been critically reviewed to underline their shortcomings. The causes, effects, mitigation techniques along with the various interpretations of voltage unbalance, prescribed in different standard, are also discussed to highlight their deficits.

"The book begins with fossil record of cyanobacteria and gives comprehensive treatment of antibacterial activity of cyanobacteria based on extensive research done by the authoIt also highlights the other aspects of biological activity like anti-fungal, anti-HIV, proteinase inhibitor, anti-mycobacterial, anti-helmintics, anti-inflammatory, cytotoxic and anti-cancer characteristics of cyanobacteria. Based on nine cyanobacterial spp. Anabaena variabilis, Anabaena fertilissima, Nostoc muscorum, Nostoc punctiforme, Nostoc linckia, Nostoc commune, Spirulina platensis, Westiellopsis prolifica and Hapalosiphon sp., monograph provides information regarding application of cyanobacteria. All the experiments are represented in a simple language with explanatory diagrams. The volume also provides a glossary of technical terms used and about more than 200 references and index are in the end for the convenience of reade. The book would be useful for the research students and teachers of the universities and colleges who want to study microbiology, medicine and pharmaceutical sciences with respect to antibacterial effects. It will also be useful for the pharmaceutical industries for research and development (R&D) related to drug discovery."The book would be useful for the research students and teachers of the universities and colleges who want to study microbiology, medicine and pharmaceutical sciences with respect to antibacterial effects. It will also be useful for the pharmaceutical industries for research and development (R&D) related to drug discovery."