Electrical formulas to find single phase two phase four wire three phase amps when hp is known hp x 746 v x %eff x pf hp x 746 v x %eff x pf x 2 hp x 746 v x %eff x pf x 1. This formula book consists of wellillustrated concepts, important formulae and diagrams, which will be highly beneficial at the last leg of. Common electrical units used in formulas and equations are. Example 1 determine the current flowing through the electric heater have p. Kva is larger than kw because loads are inductive such as motors, discharge lighting, reactors and more current is required to keep the magnetic field energized than is turned into heat kw. Use the chart in this calculation guide to find the formula you need according to. Introduction this paper is to provide information to contractors, engineers, and others in developing andor understanding an electrical plan for buildings. Previously we shared the book on ac motors which explains all these properties briefly, this post is focused on the induction motor formulas and calculation examples. Most commonly used electrical formulas are formulas related to voltage, current, power, resistance etc.
Electrical circuit calculations series circuits many circuits have more than one conversion device in them i. Ohms law formulas for ac circuits and power factor. Math formula important maths formula pdf for class 6 to. Mechanical engineering pocket formulas and physical constant handbook free download pdf formulas and mathematical terms are important to solve all numerical mechanical and quantitative aptitude problems. Top 100 basic electrical engineering formulas amps from hp amps from kw amps from kva angular velocity angular acceleration apparent power average load battery capacity capacit. Alternating current alternating or to find singlephase threephase to find direct current amperes when hp x 746 hp x 746 amperes when voltage and e. The theoretical foundation for ee is electromagnetism. Volt is a unit of electrical potential or motive force potential is required to send one ampere of current through one ohm of resistance. Useful electrical formulas to obtain single phase three phase kilowatts v x i x pf 1. Electric power for ships commonly uses the delta configuration, while commercial electronic and aircraft applications commonly use the wye configuration. Here below we have shared the important formulas topic wise, which are very useful to our gate civil engineering examination. Electricity formulas are applied in calculating the unknown electrical parameters from the known in electric circuits solved examples. Ohms law is the basic formula used in all ac and dc electrical.
Where v voltage in volts i current in amps r resistance in ohms this is called ohms law. This handbook contains some very important mechanical formulas list and important basic terms with detailed explanation with proper drawings. Lets say, for example, that we have a circuit with the potential of 1 volt, a current of 1 amp, and resistance of 1 ohm. Formulas for physical laws of electromagnetism such as maxwells. If we want to crack gate exam we need hard and smart work. Important basic formulas of electrical engineers of ac, dc and single phase, three phase circuit important formulas to be an electrical engineer.
The secretary will also be grateful to be informed of. Electrical is the branch of physics dealing with electricity, electronics and electromagnetism. I hope it can make your basic understanding about electrical calculation is clear. The handbook of electric power calculationsprovides detailed stepbystep calculation procedures commonly encountered in electrical engineering. This information is provided as a quick reference resource and is not intended to serve as a substitute for qualified engineering assistance. If the circuit components are connected end to end to form a single loop it is a seriescircuit.
In all practical problems of electrical calculations, it is assumed that the. Electrical electronics engineering formulas electrical. Download the chapter wise important maths formulas and equations to solve the problems easily and score more marks in your cbse board exams. We show you what formulas to study and what you can skip. Electric current is the time rate of change of charge flow. Electrical formulae with solved examples byjus formulas. As such, neither flodraulic, any of its affiliated companies nor its employees will assume any liability for damage, injury or misapplication as result. The handbook contains a wide array of topics and each topic is written by an authority on the subject. Electrical power plans for building construction a. Bee basic electric engineering is common to first year branches of ug engineeringexpect bt. At the end of the course the student is expected to 1. Ampere units of current one ampere is the current which one volt can send. Ohms law and the electrical formulas related to it are the foundation of all electrical circuits.
Here i discuss some of important electrical formulas. Chart on left shows the formulas used to calculate electricity. The most ubiquitous and important signal in electrical engineering is the sinusoid. It is important that student should install all the required software for the course.
List of all electrical and electronics engineering formulas. Never connect any component or lead to electrical outlets in any way. Conductors and insulators perform a very important team function. Here are the most common act math formulas you should know with an easytostudy downloadable pdf. The electric motor exploits an important effect of electromagnetism. Combining the elements of voltage, current, and resistance, ohm developed the formula. Important gate civil engineering formulas topic wise pdf we already know cracking of gate exam is not easiest one. Mechanical engineering pocket formulas and physical.
An electrical distributor supplying everything from light bulbs and dimmers to plcs and industrial automation equipment. Electrical formulae for calculating amps, horsepower. The major advantage of alternating current over direct current is. Hundreds of electrical products and tools to select from. Electrostatics formulas electrostatic force coulombs law. Electrical engineering formulas contains important information and a detailed explanation about electrical engineering formulas, its contents of the package, names of. Please send suggestions for amendments to the secretary of the teaching committee, and they will be considered for incorporation in the next edition. Engineers mininotebook formulas, tables and basic circuits. Volt unit of electrical potential or motive force potential is required to send one ampere of current through one ohm of resistance. So, its up to you to memorize the math formulas on the act. Horse power hp, watts, kilowatts, kw, kva, kilo volt amps, volts, amps, amperes, power factor, pump hp, fan hp.
All this formulas are useful for basic calculation in electrical engineering including voltage,ampere,power, efficiency,power factor and many more. Fundamental in engineering mathematics and physics course objectives. All electrical engineering formulas and equations are listed here. In the above formulas 1 is the angle of lead or lag between current and voltage and cos 1 pei power factor or pf. Very simple basic electrical quantities formulas with simple explanation in dc circuits. I quickly realized that the civil pe and electrical pe have one major difference when it comes to selecting a calculator. The charge acquired by a glass rod when rubbed with silk is called positive charge and the charge acquired by an ebonite rod when rubbed with wool is called negative charge. Element absolute value complex form instantaneous values. In order to construct a building that will last into the future, a strong foundation is a prerequisite. I have been using the ti30xiis, which i have two of from someone else who took the pe. Top 100 basic electrical engineering formulas basics of.
Download it, print it out, and study a little bit every day. Such properties include a number of poles, speed, frequency, slip, starting current and rated horsepower. Electrical formulas for load calculation electrical. Its important to practice with the calculator you will use on the actual test. The treatment throughout the handbook is practical with very little emphasis on theory. It includes all the subjects of electrical engineering, instrumentation engineering, which are required for all type of competitive examinations. Learn most important electrical engineering formulas, electrical engineering multiple choice questions objective type questions, mcqs, with question and answers, download free pdf, electrical engineering, multiple choice questions, objective type questions, electrical engineering short notes, rapid fire notes, best theory and many more. Important formulas in electrical engineering electricians math and basic electrical. Electrical engineering formulas smps switching power supply. While every effort has been made to ensure the accuracy of this information, errors can occur. Electrical formulas play a great role in finding the parameter value in any electrical circuits. All subjects formula sheet for eee faadooengineers. An electrical cord to a lamp, for example, has a copper wire conductor on the inside with a.
This formula book consists of wellillustrated concepts, important formulae and diagrams, which will be highly beneficial at the last leg of candidates preparation. Click on the desired toggle box below to see related electrical and electronics engineering formulas and equation with details. Pdf electricalengineeringformulas sobhan kasturi academia. Bee basic electric engineering is common to first year branches of. Ac voltage at home is 230v but its equation is vvm sin. Science notes for class 10 chapter 12 physcis electricity pdf. The theory of classical electromagnetism is based on maxwells equations, which provide a unified description of the behavior of electric and magnetic fields as well as their interactions with matter in practice however, circuit designers normally use simplified equations of electricity and magnetism and theorems that. Power, voltage, current, resistance formulas for dc circuits with easy explanation p, v, i, r, formulas. Tlc recommends that you download and save this pdf document and. No single discovery has affected our lives, our culture and our survival more than electricity. Electrical power plans for building construction basics for electrical load calculations i. Ohm unit of resistance one ohm is the resistance offered to the passage of one ampere when impelled by one volt. Electronic formulas ohms law formulas for dc circuits.