IP 202-1 List of Materials
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Mandatory Disclosure Part-2
COLLEGE OF ENGINEERING AND TECHNOLOGY, BAMBHORI POST BOX NO. 94, JALGAON – 425001. (M.S.) NBA Accredited Website : www.sscoetjalgaon.ac.in Email : [email protected] Mandatory Disclosure Part-II November 2009 NORTH MAHARASHTRA UNIVERSITY, JALGAON STRUCTURE OF TEACHING AND EVALUATION S.E .(CIVIL ENGINEERING) First term Sr. Subject Teaching Scheme Examination Scheme No. Hours/week Paper Lectures Tutorial Practical Duration Paper TW PR OR Hours 1 Strength of Material 4 1 -- 3 100 25 -- -- 2 Surveying-I 4 -- 2 3 100 25 50 -- 3 Building Construction and 4 -- 4 3 100 25 -- 25 Materials 4 Concrete Technology 4 -- 2 3 100 25 -- 25 5 Engineering Mathematics- 4 1 -- 3 100 25 -- -- III 6 Computer Graphics -- -- 2 25 Total 20 2 10 -- 500 150 50 50 Grand Total 32 750 SECOND TERM Sr. Subject Teaching Scheme Hours/week Examination Scheme No. Paper Lectures Tutorial Practical Duration Paper TW PR OR Hours 1 Theory of Structures-I 4 1 -- 3 100 25 -- -- 2 Surveying-II 4 -- 2 3 100 25 50 -- 3 Building Design and 4 -- 4 4 100 50 -- 25 Drawing 4 Fluid Mechanics-I 4 1 2 3 100 25 -- 25 5 Engineering Geology 4 -- 2 3 100 25 -- -- 20 2 10 -- 500 15 50 50 0 Total Grand 32 750 Total NORTH MAHARASHTRA UNIVERSITY, JALGAON. SYLLABUS OF SECOND YEAR (CIVIL) TERM-IST (w.e.f. 2006-07) STRENGTH OF MATERIALS ---------------------------------------------------------------------------------------------------------------- Teaching Scheme: Examination Scheme: Lectures: 4 Hours/Week Theory Paper: 100 Marks(3 Hrs) Tutorials: 1 Hour/Week Term Work: 25 Marks ---------------------------------------------------------------------------------------------------------------- UNIT-I: ( 11 Hrs., 20 marks) Normal stress & strain, Hooke’s law. -
Classification of Transformers Family
TECHNOLOGY BASICS ABSTRACT Transformers are used in the electrical Classification of networks everywhere: in power plants, substations, industrial plants, buil- dings, data centres, railway vehicles, Transformers Family ships, wind turbines, in the electronic devices, the underground, and even 1. Introduction undersea. The focus of this article is on transformers applied in the trans- ransformers basically perform a of transformers in the most systematic way mission of energy, usually called pow- very simple function: they increase rather than elaborating on each type. er transformers. Due to very versatile Tor decrease voltage and current for requirements and restrictions in the the electric energy transmission. It is pre- The most important international orga- numerous applications, ranging from cisely stated what a transformer is in the nisations with focus on such transfor- a subsea transformer to a wind turbine International Electrotechnical Vocabula- mers are IEC1 through E14, its technical transformer, a small distribution trans- ry, Chapter 421: Power transformers and committee for the world standards; IEEE2 former to a large phase shifter trans- reactors [1]: through the Transformers Committee former, it is very difficult to organise a mainly for the American standards and structured overview of the transformer “A static piece of apparatus with two or CIGRE3 through the Study Committee types. Also, different companies sup- mo re windings which, by electromag- A2 Transformers which mainly produ- ply different markets and each have netic ind uction, transforms a system ces technical brochures and guidelines their own classification of the trans- of alterna ting voltage and current into on many subjects. Main standards for formers, which makes the transformer another system of voltage and current the transformers in question are the IEC family even more difficult to organise. -
Mutual Inductance and Transformer Theory Questions: 1 Through 15 Lab Exercise: Transformer Voltage/Current Ratios (Question 61)
ELTR 115 (AC 2), section 1 Recommended schedule Day 1 Topics: Mutual inductance and transformer theory Questions: 1 through 15 Lab Exercise: Transformer voltage/current ratios (question 61) Day 2 Topics: Transformer step ratio Questions: 16 through 30 Lab Exercise: Auto-transformers (question 62) Day 3 Topics: Maximum power transfer theorem and impedance matching with transformers Questions: 31 through 45 Lab Exercise: Auto-transformers (question 63) Day 4 Topics: Transformer applications, power ratings, and core effects Questions: 46 through 60 Lab Exercise: Differential voltage measurement using the oscilloscope (question 64) Day 5 Exam 1: includes Transformer voltage ratio performance assessment Lab Exercise: work on project Project: Initial project design checked by instructor and components selected (sensitive audio detector circuit recommended) Practice and challenge problems Questions: 66 through the end of the worksheet Impending deadlines Project due at end of ELTR115, Section 3 Question 65: Sample project grading criteria 1 ELTR 115 (AC 2), section 1 Project ideas AC power supply: (Strongly Recommended!) This is basically one-half of an AC/DC power supply circuit, consisting of a line power plug, on/off switch, fuse, indicator lamp, and a step-down transformer. The reason this project idea is strongly recommended is that it may serve as the basis for the recommended power supply project in the next course (ELTR120 – Semiconductors 1). If you build the AC section now, you will not have to re-build an enclosure or any of the line-power circuitry later! Note that the first lab (step-down transformer circuit) may serve as a prototype for this project with just a few additional components. -
Diploma in Electrical and Electronics Engineering PAGE 1
` DIPLOMA IN ELECTRICAL AND ELECTRONICS ENGINEERING COURSES OFFERED CODE COURSE CREDITS YEAR/SEMESTER 15O A) FOUNDATION COURSES : (49 CREDITS) (COMMON FOR ALL PROGRAMMES) 0101 Communicative English – I 5 I/ODD 0102 Engineering Mathematics-I 8 I/ODD 0103 Engineering Physics – I 5 I/ODD 0104 Engineering Chemistry – I 5 I/ODD 0105 Engineering Physics- I Practical 1 I/ODD 0106 Engineering Chemistry – I Practical 1 I/ODD 0107 Communicative English – II 4 I/EVEN 0108 Engineering Mathematics-II 5 I/EVEN 0109 Applied Mathematics 5 I/EVEN 0110 Engineering Physics – II 4 I/EVEN 0111 Engineering Chemistry – II 4 I/EVEN 0112 Engineering Physics – II Practical 1 I/EVEN 0113 Engineering Chemistry – II Practical 1 I/EVEN B) CORE TECHNOLOGY COURSES : ( 43 CREDITS) 0201A Workshop Practical 1 I/ODD 0202 Engineering Graphics-I 3 I/ODD 0203 Engineering Graphics-II 3 I/EVEN 0204 Computer Applications Practical – I 1 I/ODD 0205 Computer Applications Practical – II 1 I/EVEN 3201 Electrical Circuit Theory 6 II/ODD 3202 Electrical Machines - I 5 II/ODD 3203 Electronic Devices and Circuits 5 II/ODD 3204 Electrical Circuits and Machines Practical 3 II/ODD 3205 Electronic Devices and Circuits Practical 3 II/ODD 3206 Electrical Workshop Practical 2 II/ODD 3207 Life and Employability Skills Practical 2 II/ODD 3208 Digital Electronics 5 II/EVEN 3209 Integrated CircuitsPractical 3 II/EVEN Diploma in Electrical and Electronics Engineering PAGE 1 ` C) APPLIED TECHNOLOGY COURSES: (58 CREDITS) 3301 Electrical Machines – II 5 II/EVEN 3302 Measurements and Instruments 4 II/EVEN -
Review of Ground Fault Protection Methods for Grounded, Ungrounded, and Compensated Distribution Systems
REVIEW OF GROUND FAULT PROTECTION METHODS FOR GROUNDED, UNGROUNDED, AND COMPENSATED DISTRIBUTION SYSTEMS Jeff Roberts, Dr. Hector J. Altuve, and Dr. Daqing Hou Schweitzer Engineering Laboratories, Inc. Pullman, WA USA ABSTRACT This paper reviews ground fault protection and detection methods for distribution systems. First, we review and compare medium-voltage distribution-system grounding methods. Next, we describe directional elements suitable to provide ground fault protection in solidly- and low- impedance grounded distribution systems. We then analyze the behavior of ungrounded systems under ground fault conditions and introduce a new ground directional element for these systems. Then we examine the behavior of compensated systems during ground faults and describe traditional fault detection methods. We conclude by introducing new ground fault detection methods for compensated systems. INTRODUCTION Ground fault current magnitudes depend on the system grounding method. Solidly- and low- impedance grounded systems may have high levels of ground fault currents. These high levels typically require line tripping to remove the fault from the system. Ground overcurrent and directional overcurrent relays are the typical ground fault protection solution for such systems. However, high-impedance ground fault detection is difficult in multigrounded four-wire systems, in which the relay measures the ground fault current combined with the unbalance current generated by line phasing and configuration and load unbalance. Ungrounded systems have no intentional ground. For a single-line-to-ground fault on these systems, the only path for ground current to flow is through the distributed line-to-ground capacitance of the surrounding system and of the two remaining unfaulted phases of the faulted circuit. -
Advanced Power Transformer Diagnostics – Detection of Core-Ground Issues
CIGRE-346 2020 CIGRE Canada Conference Toronto, Ontario, October 19-22, 2020 Advanced Power Transformer Diagnostics – Detection of Core-Ground Issues ALI NADERIAN JAHROMI1, PRANAV PATTABI1, JAFAR MOHAMMADI1, MOHSEN TANGSIRI2 1METSCO Energy Solutions, Canada 2MS Hydro Power Plant, Iran SUMMARY The typical construction of a power transformer results in a high potential being induced in the core, due to the electromagnetic coupling that exists between the core and winding assembly. The transformer core is normally grounded at a single point, to safely divert this induced voltage to the local ground. The core-ground connection also provides a low- resistance path under a short circuit scenario between the transformer winding and core. This allows for the reliable operation of the associated transformer protection relay unit. The isolation of core from ground forms an integral part of the transformer’s insulation system. The core-ground connection must be accessible and further removable for testing. Any issue with the transformer core-ground connection can result in improper grounding, the presence of multiple ground paths, unintentional core-grounds, and a floated core. Multiple core-grounds are created when the core comes into direct contact with the grounded internal metallic structure of a power transformer. Based on the value of the core-to-ground resistance, sustained heating effects can be caused by circulating currents that can eventually result in the melting of the transformer core. This paper outlines the use of diagnostic procedures such as Dissolved Gas Analysis (DGA) and Duval’s Pentagon, Dielectric Frequency Response (DFR) testing, and core-to-ground resistance testing for identifying core-ground defects in power transformers. -
EEE-R13-Min.Pdf
ACADEMIC REGULATIONS B.Tech. Regular Four Year Degree Programme (For the batches admitted from the academic year 2013-14) and B.Tech. Lateral Entry Scheme (For the batches admitted from the academic year 2014-15) The following rules and regulations will be applicable for the batches of 4 year B.Tech degree admitted from the academic year 2013-14 onwards. 1. ADMISSION: 1.1. Admission into first year of Four Year B.Tech. Degree programme of study in Engineering: As per the existing stipulations of A.P State Council of Higher Education (APSCHE), Government of Andhra Pradesh, admissions are made into the first year of four year B.Tech Degree programme as per the following pattern. a) Category-A seats will be filled by the Convener, EAMCET. b) Category-B seats will be filled by the Management as per the norms stipulated by Govt. of Andhra Pradesh. 1.2. Admission into the Second Year of Four year B.Tech. Degree programme (lateral entry): As per the existing stipulations of A.P State Council of Higher Education (APSCHE), Government of Andhra Pradesh. 2. PROGRAMMES OF STUDY OFFERED BY AITS LEADING TO THE AWARD OF B.Tech DEGREE: Following are the four year undergraduate Degree Programmes of study offered in various disciplines at Annamacharya Institute of Technology and Sciences, Rajampet (Autonomous) leading to the award of B.Tech (Bachelor of Technology) Degree: 1. B.Tech (Computer Science & Engineering) 2. B.Tech (Electrical & Electronics Engineering) 3. B.Tech (Electronics & Communication Engineering) 4. B.Tech (Information Technology) 5. B.Tech (Mechanical Engineering) 6. B.Tech (Civil Engineering) And any other programme as approved by the concerned authorities from time to time. -
Interlocking Coils Shall Be Wired up to Terminal Blocks in Mechanism Box Through G.I
SECTION: V TECHNICAL SPECIFICATION For 5MW Floating Solar PV Power Plant at STPS of WBPDCL interlocking coils shall be wired up to terminal blocks in mechanism box through G.I. Conduits. v) The earthing blades shall be required to carry peak current and rated short time current as the main blades of the isolator and shall withstand dynamic stresses. vi) Each earth switch shall be provided with flexible copper braids for connection to the ground mat. These braids shall have same short time current carrying capacity as the earth blades. Assembly i) The disconnecting switch along with its base frame and operating mechanism shall be completely assembled and checked for correct alignment and operation at manufacturer's works prior to despatch. ii) All parts and accessories shall have appropriate benchmarks and part numbers for identifications at site. Grounding i) Each equipment shall be provided with two ground pads for connection to station ground. ii) The ground pad shall comprise buffed metal surface with two tapped holes, M10 G.I. bolts and spring washers for connection to G.S. flat of approved size. iii) Each disconnecting/earth switch-operating rod shall be separately grounded at a point above the mechanism box. This is done by flexible copper braid of adequate section but in no case less than 70 mm². Painting i) Base frame, operating rod and all hardwares shall be hot-dip galvanised. ii) Mechanism box will be finished with two coats of aluminium paints after surface treatment, involving chemical cleaning, phosphating and application of under coats. iii) Sufficient quantity of touch-up paints shall be furnished for application at site. -
THE ULTIMATE Tesla Coil Design and CONSTRUCTION GUIDE the ULTIMATE Tesla Coil Design and CONSTRUCTION GUIDE
THE ULTIMATE Tesla Coil Design AND CONSTRUCTION GUIDE THE ULTIMATE Tesla Coil Design AND CONSTRUCTION GUIDE Mitch Tilbury New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney Toronto Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Manufactured in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. 0-07-159589-9 The material in this eBook also appears in the print version of this title: 0-07-149737-4. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more information, please contact George Hoare, Special Sales, at [email protected] or (212) 904-4069. TERMS OF USE This is a copyrighted work and The McGraw-Hill Companies, Inc. (“McGraw-Hill”) and its licensors reserve all rights in and to the work. Use of this work is subject to these terms. Except as permitted under the Copyright Act of 1976 and the right to store and retrieve one copy of the work, you may not decompile, disassemble, reverse engineer, reproduce, modify, create derivative works based upon, transmit, distribute, disseminate, sell, publish or sublicense the work or any part of it without McGraw-Hill’s prior consent. -
Report of Contributions
MT25 Conference 2017 - Timetable, Abstracts, Orals and Posters Report of Contributions https://indico.cern.ch/e/MT25-2017 MT25 Conferenc … / Report of Contributions 3D Electromagnetic Analysis of Tu … Contribution ID: 5 Type: Poster Presentation of 1h45m 3D Electromagnetic Analysis of Tubular Permanent Magnet Linear Launcher Tuesday, 29 August 2017 13:15 (1h 45m) A short stroke and large thrust axial magnetized tubular permanent magnet linear launcher (TPMLL) with non-ferromagnetic rings is presented in this paper. Its 3D finite element (FE) models are estab- lished for sensitivity analyses on some parameters, such as air gap thickness, permanent magnet thickness, permanent magnet width, stator yoke thickness and four types of permanent magnet material, ferrite, NdFeB, AlNiCO5 and Sm2CO17 are conducted to achieve greatest thrust. Then its 2D finite element (FE) models are also established. The electromagnetic thrusts calculated by 2D and 3D finite element method (FEM) and got from prototype test are compared. Moreover, the prototype static and dynamic tests are conducted to verify the 2D and 3D electromagnetic analysis. The FE software FLUX provides the interface with the MATLAB/Simulink to establish combined simulation. To improve the accuracy of the simulation, the combined simulation between the model of the control system in Matlab/Simulink and the 3D FE model of the TPMLL in FLUX is built in this paper. The combined simulation between the control system and the 3D FE modelof the TPMLL is built. A prototype is manufactured according to the final designed dimensions. The photograph of the developed TPMLL prototype with thrust sensor and the magnetic powder brake as the load are shown. -
IEEE Grounding Transformers
Grounding Transformers John S. Levine, P.E. Levine Lectronics and Lectric, Inc. [email protected] 1 • It is used to provide a ground path on either an ungrounded Wye or a Delta connected system • The relatively low impedance path to ground maintains the system neutral at ground potential • On Ungrounded systems you can have overvoltages of 6 to 8 times normal with arcing faults Arcing Ground Faults Intermittent or Re-strike •Plot of transient over-voltage for an arcing ground fault Arcing Ground Faults Intermittent or Re-strike •Intermittent ground fault: A re-striking ground fault can create a high frequency oscillator (RLC circuit), independent of L and C values, causing high transient over- voltages. – i.e. re-striking due to ac voltage waveform or loose wire caused by vibration 480V Delta Source 3Ø Load Rfe V V Cb Cb S fa THE HIGH RESISTANCE GROUNDED POWER SYSTEM CONTROL OF TRANSIENT OVERVOLTAGE • It supports the voltage on a faulted phase – If a single line-to-ground fault occurs on an ungrounded or isolated system, no return path exists and no current flows – The system will continue to operate but the other two un- faulted lines will rise in in voltage by the square root of 3, possibly overstressing the transformer insulation, and other components, by 173% UNGROUNDED SYSTEM NORMAL CONDITIONS UNGROUNDED SYSTEM GROUND FAULT ON PHASE A • Provides a metering point to measure faults A typical example is a Wind Farm. They utilize grounding transformers for fault protection on ungrounded lines When a ground fault occurs on a collector cable causes the substation circuit breaker to open, the wind turbine string becomes isolated Turbines do not always detect the fault and the generators continue to energize the cable. -
IEEE/PES Transformers Committee
Transformers Committee Chair: Sue McNelly Vice Chair: Bruce Forsyth Secretary: Ed teNyenhuis Treasurer: Paul Boman Awards Chair/Past Chair: Stephen Antosz Standards Coordinator: Jim Graham IEEE/PES Transformers Committee Spring 2019 Meeting Minutes Anaheim, CA March 24 – 28, 2019 Unapproved (These minutes are on the agenda to be approved at the next meeting in Fall 2019) TABLE OF CONTENTS GENERAL ADMINISTRATIVE ITEMS 1.0 Agenda 2.0 Attendance OPENING SESSION – MONDAY MARCH 25, 2019 3.0 Approval of Agenda and Previous Minutes – Susan McNelly 4.0 Chair’s Remarks & Report – Susan McNelly 5.0 Vice Chair’s Report – Bruce Forsyth 6.0 Secretary’s Report – Ed teNyenhuis 7.0 Treasurer’s Report – Paul Boman 8.0 Awards Report – Stephen Antosz 9.0 Administrative SC Meeting Report – Susan McNelly 10.0 Standards Report – Jim Graham 11.0 Liaison Reports 11.1. CIGRE – Craig Swinderman 11.2. IEC TC14 – Phil Hopkinson 11.3. Standards Coordinating Committee, SCC No. 18 (NFPA/NEC) – David Brender 11.4. Standards Coordinating Committee, SCC No. 4 (Electrical Insulation) – Evanne Wang 11.5. ASTM D27 – Tom Prevost 12.0 Approval of Transformer Committee P&P Manual - Bruce Forsyth 13.0 Hot Topics for the Upcoming – Subcommittee Chairs 14.0 Opening Session Adjournment CLOSING SESSION – THURSDAY MARCH 28, 2019 15.0 Chair’s Remarks and Announcements – Susan McNelly 16.0 Meetings Planning SC Minutes & Report – Tammy Behrens 17.0 Reports from Technical Subcommittees (decisions made during the week) 18.0 Report from Standards Subcommittee (issues from the week) 19.0