Week 16: Sinusoids and Phasors
In previous lessons, Our analysis has been limited for the most part to dc circuits, those circuits excited by constant or time-invariant sources. We have restricted the forcing function to dc sources for the sake of simplicity, for pedagogic reasons, and also for historic reasons. Historically, dc sources were the main means of providing electric power up until the late 1800s. At the end of that century, the battle of direct current versus alternating current began. Both had their advocates among the electrical engineers of the time. Because ac is more efficient and economical to transmit over long distances, ac systems ended up the winner. Thus, it is in keeping with the historical sequence of events that we considered dc sources first.
We begin with a basic discussion of sinusoids and phasors. We then introduce the concepts of impedance and admittance.
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- Time Table
- Academic Calendar
- Week 1: Basic Concepts
- Week 2: Basic Laws
- Week 3: Basic Laws | Wye-Delta Transformation
- Week 4: Methods of Analysis | Nodal Analysis
- Week 5: Methods of Analysis | Mesh Analysis
- Week 6: Circuit Theorems | Superposition
- Week 7: Circuit Theorems | Source Transformation and Thevenin's Theorem
- Week 8: Circuit Theorems | Norton's Theorem and Maximum Power Transfer Theorem
- Week 9: Mid Term Exam
- Week 10: Operational Amplifiers
- Week 11: Capacitors and Inductors
- Week 12: First-Order Circuits | Source Free RC and RL Circuits
- Week 13: First-Order Circuits | Step Response of RC and RL Circuits
- Week 14: Second Order Circuits | Source Free Series RLC Circuit
- Week 15: Second Order Circuits | Source Free Parallel RLC Circuit
- Week 16: Sinusoids and Phasors
- Week 17: AC Power Analysis and Three Phase Circuits
- Week 18: Final Term Exam
- Chapters 20
- Department Mechanical Engineering
- Teacher
Engr. Muhammad Waqar Zahid
