Electrical Circuit Analysis in Electrical Engineering

The electrical circuit analysis is a set of techniques used for quantitative analysis of a circuit.

Purpose of Circuit Analysis:

The circuit analysis helps the engineers to find out the behavior of each element in the circuit. It analyzes the circuit before physically connecting it. Using pen and paper for electrical circuit drawing and calculation. This can save a lot of money and avoid a hazardous situation like a short circuit and component loss.

Elements of Circuit:

In electrical engineering, an electrical circuit is a closed loop that can pass the current from source to load. A circuit may have at least one or more than one load that absorbs power. Load elements of the circuit are passive elements. Where active elements provide power to the passive components.

Types of Analysis:

Circuit analyses are transient analysis and steady-state analysis. In the case of transient circuit analysts, the circuit is analyzed at the time of powering the circuit. In steady-state circuit analysis, the power source is considered Direct Current (DC).

Phasor Algebra in AC circuit Analysis: Addition and Multiplication

August 28, 2024September 13, 2018 by Shahab Yousafzai

Parallelogram law for vector / phasor addition

Phasor diagram in an AC circuit analysis is to represent the phase angle i.e. leading and lagging effect through vector representation. Phasor algebra, polar form, and complex number conversions are also explained.

Power Factor in an AC circuit Explained with Power Triangle

February 6, 2025September 2, 2018 by Shahab Yousafzai

https://electric-shocks.com/wp-content/uploads/2018/09/Average-Power-in-AC-circuit-and-the-role-of-power-factor.jpg

Power Factor (PF) play an important role in average power dissipation in an ac circuit. PF leads to the concept of three different real, reactive and apparent power, which is better explained by Power triangle.

Reactance and Impedance of capacitor and inductor: How to Calculate Impedance Triangle

August 28, 2024August 28, 2018 by Shahab Yousafzai

current is leading in inductor

Capacitor and inductor oppose current in AC circuit because of inertia of electron motion, which is called capacitive and inductive reactance respectfully.

Difference between Alternating Current and Direct Current

August 28, 2024August 25, 2018 by Shahab Yousafzai

Difference between Alternating Current and Direct Current

Alternating current (AC) is the type of electrical current which changes its direction and magnitude every moment.

Explain Superposition Theorem Example and Solution

August 28, 2024June 21, 2018 by Gul Faraz

Superposition Theorem Principle

Superposition Theorem state that the voltage across an element in a linear electric circuit is the algebraic sum of the voltages across that element due to each independent source acting alone.

Difference between Ideal and practical, Voltage and Current Source

February 6, 2025June 12, 2018 by Gul Faraz

Difference between ideal and practical Source

In contrast to a practical voltage source, an imaginary deal source provide constant voltage regardless of load current because of no internal resistance. While ideal current source provides a constant current regardless of load current.

Star to Delta and Delta to Star Conversion Formula Calculator with Example

August 28, 2024June 12, 2018 by Gul Faraz

Star Delta Transformation

Star Delta Transformations and Delta Star Transformations allow us to convert resistances or impedances connected together at three different nodes from one type of connection to another and vice versa.

Maximum Power Transfer Theorem Proof and Example

August 28, 2024June 6, 2018 by Gul Faraz

Maximum Power Transfer Theorem

Maximum Power Transfer Theorem state that maximum power will transfer from source to load if and only if the load resistance is equal to source internal resistance. The theorem is purely about the transfer of power not efficiency.

Voltage to Current Source Transformation Theorem

August 9, 2024June 3, 2018 by Gul Faraz

Source Conversion

Source transformation or conversion is a technique to replace a voltage source with a current source for circuit simplification and vice versa.

Norton Theorem with Examples: How to Use Norton Theorem?

August 19, 2024June 1, 2018 by Gul Faraz

Norton Theorem

Norton Theorem reduces any two port circuit to a Norton Resistor, a load resistor, and a current source in parallel. Where Thevenin Theorem incorporates voltage source in series.