Dr. S. Ravivarman ravivarman@vardhaman.org +91 99942 77431
This course is intended to introduce the basic concepts of Electric Circuits, Machines, Diodes and Rectifiers to Mechanical Engineering students. This course makes the student to understand the basics of Network theorems and its applications. The operation and performance of D.C. Machines (Motors & Generators) will be exposed to the students theoretically and practically. Also, the students are made to have awareness about the AC fundamentals, Transformers and Diode rectifiers. Being an integrated course, the students will realize the theoretical concepts studied in the course by conducting experiments in the laboratory using hardware.
After the completion of the course, the student will be able to:
A6206.1. Understand the basic laws of electrical circuits and Machines.
A6206.2. Analyze the electrical circuits using nodal analysis, mesh analysis and network theorems with DC Source.
A6206.3. Apply AC fundamental to calculate power and Power factor in complex circuits.
A6206.4. Test DC and AC Machines to determine the performance indices.
A6206.5. Analyze the characteristics of DC machines, Transformers, Diodes and rectifiers.
DC Circuits: Electrical circuit elements (R, L and C), voltage and current sources, Ohm’s Law, KVL & KCL, mesh and nodal analysis, Superposition, Thevenin’s, Norton’s and Maximum Power Transfer Theorems.
AC Circuits: Representation of sinusoidal waveforms, peak and RMS values, phasor representation, real power, reactive power, apparent power, power factor, Analysis of single-phase ac circuits consisting of R, L, C, RL, RC, RLC series combinations.
D.C. Generators: Principle of operation, Action of commutator, constructional features, armature windings - lap and wave windings, E.M.F. Equation, separately excited and self-excited generators-Magnetization Characteristics. D.C. Motors & Speed Control of D.C. Motors: Principle of operation, types, back E.M.F., torque equation, speed control of D.C. Motors (Armature and field control), Losses and Efficiency, Swinburne’s Test.
Single Phase Transformers: Constructional details, EMF equation, operation on no load and on load Conditions, Phasor diagrams. Equivalent circuit, losses and efficiency, OC and SC tests, minimization of hysteresis and eddy current losses, numerical problems.
Diode and its Characteristics: P-N junction diode, symbol, V-I characteristics, rectifiers, half wave, full wave and bridge rectifiers.
Inform the instructor any time prior to the due date for an assignment that you wish to use a late day; you may then turn in the assignment up to 24 hours late. Multiple late days may be used on the same assignment. There are no partial late days; turning in an assignment 2 hours late or 20 hours late will both use 1 late day. Note that late days are intended to cover both normal circumstances (you simply want more time to work on the assignment) and exceptional circumstances. The late assignments will receive at most half credit.
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Lab attendance is required.
It is my ultimate goal for this course, and my teaching, to develop your academic skills, advance your learning of electrical and electronics engineering concepts. To do so will require commitments from myself and from you toward meeting this goal.
I will be prepared and on time for class each day, ready to use class time to help you understand the course material. I will respectfully listen to, understand, and answer questions asked in class.
You are expected to attend class and actively participate in discussions every day, answering questions, asking questions, presenting material, etc. Your participation will be respectful of your classmates, both of their opinions and of their current point in their educational journey, as we each approach the material with different backgrounds and contexts.
I will keep office hours and be available for outside appointments, and respond to emails. I will provide feedback on group presentations, exams, projects, and homeworks.
You are encouraged to provide constructive comments for improving this course for furthering your learning throughout the semester. There will be an opportunity for anonymous course feedback at the end of the semester, in which I hope you all participate. Through your feedback I can improve this course and others for future students.
I will abide by the above syllabus and grade your work fairly.