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This Article explains the how the DC generator works, and constructional details of DC generator.              DC generator is a Machine which converts  mechanical energy into electrical energy. Rotating prime movers help to move the armature conductor in the stationary magnetic field, so that the conductor cuts the magnetic field, an e.m.f induced in the conductor ( according to faradays law ).      If induced e.m.f  collected by brush and slip ring the e.m.f is forming the sine wave (AC, i.e +ve and -ve values) due changing value of cutting the flux in different positions of the conductor. simple ac generator, image source: Wikipedia When it right angle to field, emf is zeo (at 0°,180°,360°), But when it align with magnetic field e.m.f values are maximum(at 90°,270°). in between these positions, the e.m.f values are in between zero and maximum, positive (between 0° to 90°, between 90°to180°) and negative (between 180° to...

      Without knowing the fundamentals, Laws, principle behind the concepts study become hard, makes more difficult the learning process. Some of the basic rules and concepts are important to understand the electrical machines.      Most of the electrical machine's principles running around the electromagnetic induction concepts. Initially the DC source invented using battery using coins, chemicals. till the invention Alternating current (AC). In 1931 Michael faraday found that the flux changing causing the induction of e.m.f i.e. electro motive force. But now-a- days maximum we are using the AC, with the desired voltage with the help of transformer. it is good to know the laws and principles behind this which are helping silently. Faraday's Experiment:  Consider a coil C of several turns connected to a central zero galvanometer. If a permanent magnet is moved towards the coil it will be observed that the galvanometer shows deflection in one direction...

ELECTRIC MOTORS AND TRANSFORMERS (ELECTRICAL ENGINEERING GROUP)   Course Objectives:  The aim of this course is to help the student to attain the following industry identified competency through various teaching learning experiences:  Provide the basic concept of DC machines and Transformers.  Develop the skills of the students in the areas of machines and transformers by identifying the current problem in the industries and bring solutions through research.  Diagnose the condition of DC machines and Transformers.  Maintain electric motors and transformers. Course Outcomes: The theory, practical experiences and relevant soft skills associated with this course are to be taught and implemented, so that the student demonstrates the following industry-oriented Co associated with the above-mentioned competency:  a) Maintain different types of DC generators  b) Maintain different types of DC motors. c) Maintain single phase transformer.  d) Ma...