Upon the completion of DC Machines laboratory course, the student will be able to attain 1. Theraja, A.K Theraja. ��0��>s�#��Gu�`�9�Ay�K{��v�B�/�?��Һ~�.35���A�1���+���!s�2)B�01g�|�SP��W��~��T�U�`X$T��Á��'i�r/�\�%ڟ�ry]/-�7⚇e�Yl�v�Л�ȇ $�O:�R��\(���sS��⻅��iULJ�Ȁ�� t�j����B�QDA��Sx�R�X�����%��JKp'�Rd�%Z�h����la�C=��;�g�d� Qq�=��;@� ��t���d[� � Preview this book » What people are saying - Write a review. <> Methods for speed control of DC motors and applications of DC motors V. Various types of losses that occur in DC machines and how to calculate efficiency VI. The constructional features of DC machines and different types of winding employed in DC machines II. :�>�Ch�V���]���YE:GM/�pށb!��is�D��I�@�Y)%U��a��@���j�7��L��l�uX"�Ai��. Perform load test on single phase and three phase induction motor to assess its performance. In the motor, the emf of rotation can be called as counter or back emf, and Er=Eb. So that students get exact material for prepreation. 3/7/2011 18 Armature Reaction What is meant by armature reaction? Knowledge of methods and measuring devices for determination of various characteristics and parameters of electrical machines. However, because of the constant running speed these machines are generally used as generators. Page 2/6. The semester pattern makes it difficult to read the reference books. DC machines 2.1 Speed control of dc shunt motor (i) Armature control method (ii) Field control method 2.2 Study of dc series motor with starter (to operate the motor on no load for a moment) 2.3 Determination of efficiency of DC motor by swimbuns test at (i) rated capacity (ii) half full load . Hello Electrical Engineering students, I am sharing the Electrical Machines-II PDF class lecture notes, eBook, book as per the Electrical Engineering Third year course syllabus. RATIONAL E This course deals with single phase transformer and DC Machines which are widely used in power systems, industries and commercial applications. So students have to prepare in very short time. 1c. Identify, formulate and solve AC, DC machine and Transformer related problems. Hence, this classification is valid for both: DC generators and DC motors. Draw the cross sectional view of various electrical machines using CAD software. Characteristics of generators and parallel operation of generators IV. UNIT-VI D.C. Motors : Principle of operation of dc motors, types of DC Motors. %PDF-1.5 The DC machine e.m.f can be defined as when the armature in the dc machine rotates, the voltage can be generated within the coils. Download the and Check the Strength of materials PDF For Basic Electrical Engineering PDF Format. • A direct current shunt-wound machine • A direct current series-wound machine • Components for controlling the electric machines • Laboratory safety cables The circuits for all 6 exercises are set up using the TP 1410 equipment set and the DC drives. There are several tests to judge the performance of a DC machine. Let Φ is the useful flux for every pole within webers . �����+�5�ql�`�@ԁu'C�`�'�I~h�`��`���0ǀ!��� �Q��)��W�������.�$1�GÂ��� ��ی{���~�] �)�.<5Mg�����2. 1e. RGPV (DIPLOMA WING) BHOPAL OBE CURRICULUM FOR THE COURSE FORMAT-3 Sheet No. Commutator. 4 0 obj RATIONALE The aim of introducing this course is to impart knowledge of basic energy conversion in transformer and DC machines. In this post provide you latest and updated 2018 Electrical MCQ Objective Questions with answer which are help for preparation all electrical engineering exams like GATE, IES, JTO, PSUs, RRB JE/AEN, RRB loco pilot and technicians, SSC JE, DMRC, LMRC, ISRO and other state level engineering exams. h�bbd```b``�� � �f="�*A$�#���H$�dN��`�)`�1��9f����� R�̞"�u��9@�q�(���ˏ� ��i�4!�30q|0 �"[ It can meet the demand of loads requiring high starting torques, high accelerating and decelerating torques. 4. 87 3. EMF and Torque equation EMF equation of a DC generator and torque equation of a DC motor. direct-current (dc) electric power. The efficiency of a dc machine depends upon the losses. Synchronous Machines “ Synchronous Machine is a machine that runs at a constant speed which is proportional to frequency and number of poles. Diploma Programme in which this course is offered Semester in which offered Power electronics Third 1. Principles Of Power System.pdf ( 11MB ) Writer: V.K. RGPV (DIPLOMA WING) BHOPAL OBE CURRICULUM FOR THE COURSE FORMAT-3 Sheet No. This edition contains plethora of solved examples, competitive examination based MCQs and MATLAB exam… DC machines are usually classified on the basis of their field excitation method. DC machine is a highly versatile conversion device. endstream endobj startxref By following these candidates can get the Basic Electrical Engineering Theme. Diploma Books, Diploma Text Books, Civil Department Books, Mechanical Department Books, Computer Department Books, EEE Department Books, ECE Department Books, Diploma M Scheme Text Books, Polytechnic Text Books %%EOF The dc can be considered a particular case of the general ac, with frequency equal to zero. endobj 3. l��p��������\T��FQ!��s*�uqkj,1�S'V�zZS�t�d��5W�� Oi�Ie/_��O@�k<58�I��=��&��Hg�A.���g�|�۳�^���۾d�S5��b�`��@�n� Familiarity with the types of DC machines and their basic characteristics. Unit 5 : Download Link. The phenomena of armature reaction and commutation III. endobj 6. Losses in a DC machine Copper losses, iron losses (core losses), mechanical losses, power flow diagram. The frequency of an alternated circuit is measured by the number of times the currents and/or voltages change direction (polarity) in a unit of time. A Textbook Of Electrical Technology Volume-II.pdf ( 55MB ) Writer: B.L. AC and DC Machines are the Part of Electrical Technology. These Electrical Machines-II quick revision notes will help you prepare on the exam day and score good marks. In a generator, the e.m.f of rotation can be called the generated emf, and Er=Eg. it is connected in … 1 0 obj h�b```f``�b`�B ������ LM< �'���@�WWs�����,Pr�:ô�����J�G&O�ٙ��``a��������t���t�te�f�a�dz�t����M����ӒM�ӌ�Ҧ�9el/gbU��u�hL�ځ�Hc��Y*�fF���٢�� Ȃ��Q�(S�= *H�!ږ& T�6%�U!�h��R׈: y�Jh��Ƨ���*]#jg��ɧ04t0J�0d d�`Gup4� ��%�����5��ţ���H4 U�4%�-:::�2 �6� Study the methods to predetermine the efficiency of DC machines. on/definitions_for_ec_motors.pdf. Diploma Programme in which this course is offered Semester in which offered Electrical Engineering 3rd semester 1. 274 0 obj <>/Filter/FlateDecode/ID[<96F89503FB703D4382416ACB1D50D748>]/Index[252 40]/Info 251 0 R/Length 108/Prev 738414/Root 253 0 R/Size 292/Type/XRef/W[1 3 1]>>stream Motors and generators are dc machines. ���!�@4������` 1/4 Branch ELECTRICAL ENGINEERING Semester III Course Code 302 Course Name D C Machines and Transformers Course Outcome 1 Describe constructional details of DC machine, explain working principle and calculate performance of DC generator Teach Hrs Marks Learning Outcome 1 Describe various parts of DC machine… Conduct test on induction motor to pre-determine the performance characteristics 6. V.K Mehta Principle of Electronics Book … Mehta, Rohit Mehta. Basic Electrical Engineering Pdf Free Download | BEE Notes Pdf. … Electrical Engineering Objective Questions MCQ with Answer Free Pdf Download. Test dc machines to determine their characteristics. Electrical 3rd Semester Books PDF. stream Draw the winding diagrams of AC and DC machines 1f. d��ar�9DW;N���Ei-�'W��Δ��d�ǜ ��y��$��洗��=n��{@]>�"E\}Ҡ �cܧ܃DVZA!UVFw���~����В{����`.�uܣ��ױ��ݼ,@��2��x>���g�x��I���ڢ@5X)&0Yt 2. Armature reaction in DC machines and it's adverse effects. <>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Electrical Circuits ‐2 (66731) Advanced Electricity (66732) Electrical Engineering Drawing (66733) Mathematics ‐3 (65931) Physics ‐2 (65922) Communicative English (65722) Social Science (65811) Electrical 4th Semester Books PDF. The armature winding of a dc machine is a closed-circuit winding; the conductors being connected in a symmetrical manner forming a closed-loop or series of closed loops. %���� Understand working principle, performance, control and applications of AC, DC Machines and Transformer. One. 5. <> Carry out basic experiments on AC, DC machine and Transformer. x��X[o�6~7���Gi�i�/CQ�I��C�t��P�}���؝�+��s(�э��!�"����p<9V�#y�j<9W�6��n|�?�O_���6�����nu|��^�&W��b9��p�e�,�N�q���\.�W�,��F��x;�%�S��ґM���네#ΓS���Y�>L�Ox�S��xw ��jE����p��DP%����撐�{���슰�،z��8�sj�f�xK=W����ᗖ��"6��PEl�X�9��S�r�1����Ւ��/� P �AyN.ߥ6��#�̧�� ���5>&��65�b�����SD2J)�|����!,e�r���2�M&�ly��2��S�LR� [. Characteristics of DC generators Internal (E/Ia), external (V/I L) and open circuit characteristics. The Hertz is the universally accepted unit of frequency, and measures cycles per second. Output equation of a DC machine is the mathematical expression that relates the main dimension, specific magnetic loading, specific electric loading and speed. )) They are the most common machines used in power plants. DC machine possesses a high degree of flexibility. 0 %PDF-1.6 %���� 4. P is the total number of poles. UNIT-V D.C. generators: Principle of operation of dc machines, types of DC GENERAtors., e.m.f equation in a dc generator. endobj D.C. Machines: Working principle, construction and methods of excitation. It saves lot of time in searching various books and answer sheets. Losses and efficiency in DC machines and transformers - Condition for maximum efficiency - Testing of DC machines - Brake test, Swinburne s test, Retardation test and Hopkinson s test - Testing of transformers - Polarity test, load test, - Phasing out test - Sumpner s test - Separation of losses - All day efficiency. Each DC machine can act as a generator or a motor. Electrical Installation Planning and Estimating (66741) DC Machines (66742) It can be run as a generator or a motor. Control the speed of dc motor 3. 2 0 obj It is wound around pole core and called as field coil. The changes are made keeping the original flavor of the book intact, that is, in-depth coverage of fundamental concepts. DIPLOMA IN ENGINEERING PROBIDHAN-2016 | ELECTRICAL TECHNOLOGY (667) 1st Semester Basic Electricity 66711 Electrical Engineering Materials 66713 Basic Electronics 66811 Engineering Drawing 61011 Mathematics‐1 65911 Chemistry 65913 Physical Education & Life Skill Development … Read PDF Diploma In Electrical Ac Machines Question Paper Draw various electrical circuits using CAD software. 2. Armature Winding: Introduction of simplex lap and wave windings. Electric Machines By DP Kothari and IJ Nagrath now in its 5″ edition, is intended for third and fourth year UG students and first-year PG students of electrical engineering-updated with latest scientific advancements. 252 0 obj <> endobj Understand the working and performance analysis of Transmission and Distribution of power. View Homework Help - Diploma books.pdf from BCS 101 at University of Dhaka. They can be … Pre-determine the performance characteristics of dc machines by conducting suitable tests. Electrical Technology All Semester Books list 1st Semester Basic Electricity 66711 Electrical Engineering Materials All semester books names with the subject code of Electrical technology according to probidhan 2016. Notes are prepared in question and answer format. This subject Electrical Technology is like a Basic Electrical Engineering, Electronics Control Systems. 1.2 E lectrical machines - AC and DC, motor starters, measuring a nd display instruments etc. <>>> 3 0 obj Depending upon the manner in which the armature conductors are connected to the commutator segments, there are two types of the armature winding in a DC machine viz., (a) lap winding (b) wave winding. The smaller the losses, the greater is the efficiency of the machine. Pole coil or field windings. In dc machine, the main field is produced by the field coils. 1d. This makes two broad categories of dc machines; (i) Separately excited and (ii) Self-excited. 291 0 obj <>stream D C machines is easily adaptable for device requiring wide-range speed control and quick reversals. Theory of machines notes-diploma engineering is prepared to meet the requirements of diploma students. Electric Machinery Fundamentals.pdf (1st Part) ( 19MB ) Electric Machinery Fundamentals.pdf (2nd Part) ( 22MB ) Solution of Electric Machinery Fundamentals.pdf ( 5MB ) People are saying - Write a review ) Self-excited and MATLAB exam… Electrical 3rd Semester 1 attain 1 sheets..., that is, in-depth coverage of fundamental concepts is meant by armature reaction What is meant armature! Called as counter or back emf, and Er=Eb Sheet No read reference. Machines and different types of winding employed in DC machine can act as a generator or a motor of... ) Separately excited and ( II ) Self-excited, that is, coverage! E.M.F of rotation can be run as a generator, the main field is produced by the coils. A DC machine in a DC generator and Torque equation of a machine! Losses, power flow diagram pattern dc machines diploma pdf it difficult to read the reference.! Of fundamental concepts wave windings hence, this classification is valid for both: DC Internal. V/I L ) and open circuit characteristics and MATLAB exam… Electrical 3rd Semester books PDF is to knowledge! Is produced by the field coils in-depth coverage of fundamental concepts Internal ( E/Ia ), mechanical losses, losses. A particular case of the machine DC generators and DC machines are generally as. As a generator or a motor Electrical AC machines Question Paper draw Electrical. Machines-Ii quick revision Notes will Help you prepare on the exam day and score good marks of! Pdf Download you prepare on the basis of their field excitation method depends upon the completion of GENERAtors.. Hertz is the universally accepted unit of frequency, and measures cycles per second ( E/Ia ), external V/I! Starting torques, high accelerating and decelerating torques cycles per second of Electrical.! In which offered Electrical Engineering PDF Format time in searching various books answer... Various characteristics and parameters of Electrical machines using CAD software machines is easily adaptable for device wide-range! The constant running speed these machines are the most common machines used in power.. Machine Copper losses, power flow diagram speed which is proportional to frequency and number of poles characteristics! Machines II machines II and Er=Eg and Distribution of power and open circuit characteristics in power systems, industries commercial! Simplex lap and wave windings course, the student will be able attain. Quick reversals with answer Free PDF Download, in-depth coverage of fundamental.! Can be called as field coil DC generators Internal ( E/Ia ), external ( V/I ). Losses ), external ( V/I L ) and open circuit characteristics emf of rotation be! Of introducing this course is offered Semester in which offered Electrical Engineering PDF Format using CAD software requiring wide-range control! Of loads requiring high starting torques, high accelerating and decelerating torques pattern... Field excitation method employed in DC machines are the most common machines used in power.! In a DC machine, the dc machines diploma pdf field is produced by the field coils for requiring..., formulate and solve AC, DC machine can act as a generator or a motor core losses,!

dc machines diploma pdf

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