Calculation Example: AC Power Fundamentals
Calculation example for AC Power Fundamentals
electrical Engineering
Professional knowledge base and engineering tools for electrical engineering.
Knowledge Categories
Circuits & Power Systems
Calculation Example: Alternating Current
Calculation example for Alternating Current Fundamentals
Calculation Example: Earth Electrode Resistance and Protective Coordination (TN, TT, IT)
Calculation example for single ground rod resistance (RA) using Dwight's formula and protective coordination in earthing systems (TN, TT, IT)
Calculation Example: Electrical Conductor Sizing
Calculation example for minimum required conductor ampacity and wire sizing under continuous and non-continuous loads.
Calculation Example: Electrical Power and Energy (Electrical Power & Energy)
Calculation example for electrical power and energy in DC circuits
Calculation Example: Electrical Resistance and Power Rating Using Ohm's Law
Calculation example for determining electrical resistance and thermal power dissipation using Ohm's Law, selecting a safe resistor wattage rating, and sizing heating wire length from material resistivity
Calculation Example: Ideal Transformer Principles
Calculation example for finding the turns ratio and induced secondary voltage of an ideal transformer
Calculation Example: Low-Voltage Installation Framework
Calculation example for minimum cable ampacity and protection coordination in low-voltage electrical installations
Calculation Example: Magnetic Circuit Basics
Worked calculation example for magnetomotive force, reluctance, and magnetic flux in a toroidal core
Calculation Example: Phasors and AC Impedance
Calculation example for Phasors and AC Impedance
Calculation Example: Series and Parallel Circuits
Calculation example for series and parallel circuits
Calculation Example: Three-Phase Power Systems
Worked calculation example for real, apparent, and reactive power in balanced three-phase power systems.
Earthing Systems (TN, TT, IT)
Overview of system earthing topologies and basic concepts for electrical safety.
Electrical Conductor Sizing
Foundational principles for sizing electrical conductors based on ampacity and continuous load requirements.
Electrical Voltage Drop Calculation
Basic methodology for calculating voltage drop in electrical circuits according to standards.
Low-Voltage Installation Framework
Core safety principles and protection against shock for low-voltage electrical installations.
Magnetic Circuits Basics
Foundational calculation methods for magnetic flux, magnetomotive force, and reluctance in simple magnetic circuits.
Motor Branch Circuits
Design rules for sizing conductors and protection devices specifically for electric motor loads.
Overcurrent Protection
Design fundamentals for sizing and selecting circuit breakers and fuses in electrical systems.
Other Topics
Calculation Example: Basic Derivatives
Worked calculation example for basic derivatives, curve slope, and tangent line equations
Calculation Example: Kirchhoff's Voltage Law (Single-Loop Circuit)
Worked calculation example for analyzing voltage drops and load resistance in a closed single-loop DC circuit using Kirchhoff's Voltage Law (KVL).
Calculation Example: Ohm's Law in DC Circuits
Worked calculation example analyzing electric current and power delivery in a direct current circuit using Ohm's Law and Joule's Law with circuit protection assessment.
Calculation Example: Temperature and Heat Concepts
Calculation example for temperature and heat concepts
Electrical Conduit Fill
Guidelines and calculations for determining allowable conduit fill capacities.
Mathematical Functions Graphing
Learn the basics of mathematical functions and interactively plot various graph types.
Worked Example: Basic Area and Volume
A worked example demonstrating the transition from 2D area to 3D volume.
Worked Example: Ratio and Proportion (Scaling Up & Down)
A worked example demonstrating the use of ratio and proportion for engineering scaling, including both enlarging and reducing sizes.
Worked Example: Triangle Geometry & Pythagoras
A worked example demonstrating the use of the Pythagorean theorem in spatial reasoning.