21EE33 Electric Circuit Analysis syllabus for EE

Basic Concepts:

Active and passive elements, Concept of ideal and practical sources. Source transformation and Source shifting, Concept of Super-Mesh and Super node analysis. Analysis of networks by (i) Network reduction method including star – delta transformation, (ii) Mesh and Node voltage methods for ac and DC circuits with independent and dependent sources. Duality.

Network Theorems:

Super Position theorem, Reciprocity theorem, Thevenin’s theorem, Norton’s theorem, Maximum power transfer theorem and Millman’s theorem. Analysis of networks, with and without dependent ac and DC sources.

Resonant Circuits:

Analysis of simple series RLC and parallel RLC circuits under resonances. Problems on Resonant frequency, Bandwidth and Quality factor at resonance

Transient Analysis:

Transient analysis of RL and RC circuits under DC excitations: Behavior of circuit elements under switching action, Evaluation of initial conditions.

Laplace Transformation:

Laplace transformation (LT), LT of Impulse, Step, Ramp, Sinusoidal signals and shifted functions. Waveform synthesis. Initial and Final value theorems.

Unbalanced Three Phase Systems:

Analysis of three phase systems, calculation of real and reactive Powers by direct application of mesh and nodal analysis.

Two Port networks:

Definition, Open circuit impedance, Short circuit admittance and Transmission parameters and their evaluation for simple circuits, relationships between parameter sets. Teaching-Learning Process Chalk and Board, Problem based learning.

Practice (Laboratory)

Experiments

(to be carried out using discrete components)

1 Loading effect of different voltmeters on an electric circuit.

2 Voltage Dividers with Loads

3 Measurement AC and DC quantities (voltage, frequency, current) using oscilloscope.

4 Determination of resonant frequency, bandwidth, and Q of a series circuit.

5 Determination of resonant frequency, bandwidth, and Q of a parallel circuit.

6 Verification of Thevenin’s theorem.

7 Verification of Norton’s theorem. 8 Verification of Superposition theorem.

9 Power factor correction.

10 Measurement of time constant of an RC circuit.

Course outcomes (Course Skill Set):

At the end of the course the student will be able to:

• Understand the basic concepts, basic laws and methods of analysis of DC and AC networks and reduce the complexity of network using source shifting, source transformation and network reduction using transformations.
• Solve complex electric circuits using network theorems.
• Discuss resonance in series and parallel circuits and also the importance of initial conditions and their evaluation.
• Synthesize typical waveforms using Laplace transformation.
• Solve unbalanced three phase systems and also evaluate the performance of two port networks.

Assessment Details (both CIE and SEE)

• The weightage of Continuous Internal Evaluation (CIE) is 50% and for Semester End Exam (SEE) is 50%.
• The minimum passing mark for the CIE is 40% of the maximum marks (20 marks).
• A student shall be deemed to have satisfied the academic requirements and earned the credits allotted to each subject/ course if the student secures not less than 35% (18 Marks out of 50)in the semester-end examination(SEE), and a minimum of 40% (40 marks out of 100) in the sum total of the CIE (Continuous Internal Evaluation) and SEE (Semester End Examination) taken together

CIE for the theory component of IPCC

Two Tests each of 20 Marks (duration 01 hour)

• First test at the end of 5th week of the semester
• Second test at the end of the 10th week of the semester

Two assignments each of 10 Marks

• First assignment at the end of 4th week of the semester
• Second assignment at the end of 9th week of the semester Scaled-down marks of two tests and two assignments added will be CIE marks for the theory component of IPCC for 30 marks.

CIE for the practical component of IPCC

• On completion of every experiment/program in the laboratory, the students shall be evaluated and marks shall be awarded on the same day. The15 marks are for conducting the experiment and preparation of the laboratory record, the other 05 marks shall be for the test conducted at the end of the semester.
• The CIE marks awarded in the case of the Practical component shall be based on the continuous evaluation of the laboratory report. Each experiment report can be evaluated for 10 marks. Marks of all experiments’ write-ups are added and scaled down to 15 marks.
• The laboratory test (duration 03 hours) at the end of the 15th week of the semester /after completion of all the experiments (whichever is early) shall be conducted for 50 marks and scaled down to 05 marks. Scaled-down marks of write-up evaluations and tests added will be CIE marks for the laboratory component of IPCC for 20 marks.

SEE for IPCC

Theory SEE will be conducted by University as per the scheduled timetable, with common question papers for the course (duration 03 hours)

• The question paper will have ten questions. Each question is set for 20 marks.
• There will be 2 questions from each module. Each of the two questions under a module (with a maximum of 3 sub-questions), should have a mix of topics under that module.
• The students have to answer 5 full questions, selecting one full question from each module.

The theory portion of the IPCC shall be for both CIE and SEE, whereas the practical portion will have a CIE component only. Questions mentioned in the SEE paper shall include questions from the practical component).

• The minimum marks to be secured in CIE to appear for SEE shall be the 12 (40% of maximum marks30) in the theory component and 08 (40% of maximum marks -20) in the practical component. The laboratory component of the IPCC shall be for CIE only. However, in SEE, the questions from the laboratory component shall be included. The maximum of 04/05 questions to be set from the practical component of IPCC, the total marks of all questions should not be more than the 20 marks.
• SEE will be conducted for 100 marks and students shall secure 35% of the maximum marks to qualify in the SEE. Marks secured will be scaled down to 50.

Suggested Learning Resources:

(1)Engineering Circuit Analysis, William H Hayt et al, Mc Graw Hill,8th Edition,2014.

(2)Network Analysis, M.E. Vanvalkenburg, Pearson, 3rd Edition,2014.

(3)Fundamentals of Electric Circuits, Charles K Alexander Matthew N O Sadiku, Mc Graw Hill, 5th Edition, 2013.