**AC (Alternating Current) Fundamentals **

- Insulating And Dielectric Materials – Types, Properties & Applications
- Introduction to Harmonics – Effect of Harmonics on Power System
- Short Circuit Currents And Symmetrical Components
- Is Reactive Power Useful? Importance of Reactive Power
- Maximum Power Transfer Theorem for AC & DC Circuits
- Difference between Star and Delta Connections – Comparison Of Y/Δ
- Delta Connection (Δ): 3 Phase Power, Voltage & Current Values
- Star Connection (Y): Three Phase Power, Voltage & Current Values
- Three Phase Current Values in a 3-Phase System
- Basic Magnetic Terms definition with Formulas
- What is an Electric Circuit? Types of Circuits, Network & Parts Of Circuit
- How to Find the Number of Nodes, Branches, Loops and Meshes in a Circuit?
- Advantages of Power factor improvement and Correction
- Ohm’s Law with simple explanation
- How to Calculate/Find the Rating of Transformer in kVA (Single Phase and Three Phase)?
- What is Power Factor (Cosθ) ? Cos fi or P.f Definitions & Formulas
- Why we can’t store AC in Batteries instead of DC?
- How to find The value of Burnt Resistor ( By three handy Methods )
- Power Formulas in DC, AC Single Phase & Three Phase Circuits.
- Capacitors MCQs with Explanatory Answers
- Capacitor Code: How to Find the value of Ceramic Capacitors?
- Prove that Volume of The conductor is Inversely proportional to the squire of Voltage ( Vol = 1/V2). And what is the effect of this relation on Transmission and Distribution System.
- Why Power is Zero (0), in Pure Inductive, Pure Capacitive or a circuit in which Current and Voltage are 90 Degree out of phase?
- Basic Concepts (MCQs With Explanatory Answers)
- A (50/60 Hz) Transformer. Which one will give more Output? (When operates on 50 or 60 Hz frequency)
- Why the circuit Current (I) decrease, when Inductance (L) or inductive reactance (XL) increases in inductive circuit?
- Why the Circuit Power factor (Cos θ) Decreases, when Inductance (L) or inductive reactance (XL) increases, In inductive circuit?
- Single Phase AC Circuits MCQs ( With Explanatory Answers)
- In inductive circuit, Why Current increases, when frequency Decreases?
- Three Phase AC Circuits MCQs With Explanatory Answers
- Main Difference Between Electrical and Electronic Engineering?
- What is the Role of Capacitor in AC and DC Circuit?
- According to Ohm’s Law, Current increases, when Voltage increases,(I=V/R), But Current decreases, when Voltage increases according to (P=VI). Explain?
- Why AC Needs More Insulation Than DC at Same Voltage Level?
- Why the reactance of a system under fault condition is low and faults currents may raise dangerously high value. ? (With simple example)
- Basic Electrical Formulas
- Electrical Formulas AC & DC Circuits (Single-φ & 3-φ)
- AC Voltage at home is 230V but its equation is v=Vm Sin φ. Explain the difference?
- What is the differences between E.M.F and Voltage (P.d)
- Why XL Inductive Reactance In DC Supply Is Zero (0)?

Good website for learning

Dear sir,<br /><br />How to select system of voltage (12V, 24V for DC) and 11KV, 22KV, 33KV voltage system with respect to load requirement.