The most common electrical engineer interview questions Electrical engineering can be complex and challenging to answer questions, especially if you need to make an impression during a job interview. Below are some of the main types of questions that you will find with some ti...

Resistor Color Code Calculator – 3, 4, 5 and 6 band count resistors 3, 4, 5 and 6 band resistor color code calculator Resistor color codes are used by the Radio Manufacturers Association to indicate the value of resistance defined in accordance with international standards IEC...

Insulating and Dielectric Materials – Types, Properties and Applications Introduction to Insulating and Dielectric Materials Definition of insulating and dielectric materials Electrical insulating material can be defined as a material that does not allow electric current to pa...

Best Languages For Machine Learning in 2020! A learning machine is a device whose actions are influenced by past experience Introducing Machine Learning- Machine learning is a part of artificial intelligence that has been described as the science of getting things done on comp...

Resistor and resistors types Static, variable, linear, and non-linear Different types of resistors – static, variable, linear and non-linear resistors and applications Resistance: The property of a substance that opposes the flow of electric current (or electricity) through it...

Resistant Symbols – Variable, adjustable and special resistors symbols Resistant Symbols – Variable and Adjustable Resistor Symbols – Special Resistor Symbols Resistance symbols It is a symbol of a fixed resistor. Both of these symbols represent fixed resistors in the system o...

Current Transformers (CT) – Types, Characteristics and Applications Current Transformers (CTs) – Construction, types, installation, characterization and applications What is a current transformer (CT)? Current transformers (CTs) are used in high voltage (HV) and medium voltage...

Transformers Fire Protection System – Causes, Types and Requirements Basic Requirements for Transformers Fire Protection System Causes of fire in transformers Excessive overheating, extremely severe short circuits, oil defects and lightning strokes can cause fire on transforme...

Power transformer protection and defects eet Power transformer protection and type of faults In our previous post, we have already discussed electrical security systems, devices and units. Today, we will talk about the different types of transformer safety and defects. Power t...

Transformer Maintenance – Power Transformers Maintenance, Diagnostic and Monitoring Maintenance of Power Transformer – Transformer Diagnostic and Monitoring Introduction Transformers stationary machines are very reliable machines, without any shifting and rotating parts, and i...

Transformers Insulation Materials in Oil-Submerged and Dry-type T / F Types of Transformers Insulation Materials Insulation in oil-immersed transformers The most common insulation today for high-voltage wingdings in a transformer is a wax coating on wire, with craft paper used...

Transformer Performance and Electrical Parameters Transformer Performance and Electrical Parameters Calculation Rated Power Trans F Transformer Rated power is the amount of power a transformer can control and is limited by the size of the winding conductor, and when the curren...

Is it possible to operate a 50 Hz transformer at 5 Hz or 500 Hz frequency What happens if a 50 Hz transformer is connected at 5 Hz or 500 Hz supply frequency What if a power transformer designed to operate at 50 Hz frequency was connected to a 5 Hz frequency or a 500 Hz source...

What is a shunt reactor – types, construction and applications Why use shunt reactors? The difference between a power transformer and a shunt reactor What is a shunt reactor? The shunt reactor is similar to a power transformer but compared to a power transformer it has only on...

Best Conductor Of Electricity best electrical conductor Electric conductors have movable electrical charge particles, known as “electrons” in metals. When an electric charge is applied to a metal at certain points, the electron will move and allow electricity to pass through i...

Transformer Efficiency, All day Efficiency & Maximum Efficiency Status for transformer efficiency, all-day efficiency and maximum efficiency Transformer efficiency Transformer efficiency can be defined as the ratio between output and input. Transformer Efficiency = Output...

Can we run a 60 Hz transformer on a supply source of 50 Hz and vice versa What happens when a 50 Hz transformer works at 60 Hz and vice versa Let’s say we have a transformer with the same rating and dimensions when operating at 60Hz and 50૦Hz supply frequency. Let’s see what h...

Transformer name sheet (general requirements). Transformer name sheet (general requirements). What follows is the minimum information and data to be displayed on the transformer nameplate. The standards require the following information and data for a transformer above 500 kVA...

Transformer Phasing: The Dot Notation and Dot Convention . Transformer Phasing: Dot Notation and Dot ConventionDot notation Refer to figs (1) and (2), you will notice that the primary sides of both transformers are the same, i.e. the primary windings of both transformers wrapp...

How to calculate transformer rating in kVA (single phase and three phase) Calculate and find the rating of single phase and three phase transformers in KVA As we know, transformers are always rated in kVA. Below are two simple formulas for finding the rating of single phase an...

Transformer loss – the type of energy loss in the transformer The type of energy loss in the transformer An ideal transformer does not have energy loss ie zero loss and 100% efficient. But in real (practical) transformers, energy dissipates into windings, cores and surrounding...

EMF equation of a transformer and Voltage Transformation Ratio EMF Equation of Transformer Introduction The magnitude of the EMF (or voltage) induced in the transformer can be found by the EMF equation of the transformer. When the primary winding of the transformer is applied...

Ideal Transformer: What is it? The ideal transformer An ideal transformer in which no damage is done, in other words, the transformer input is equal to the output of the transformer. As its name implies, it is only theoretical because the actual transformer must have some disa...

How to perform continuous testing for multi-meter electrical components What is a consistency test and how to test for consistency? Continuous testing for various electrical and electronic components and devices Electrical wiring installations, maintenance, troubleshooting and...

How to calculate the resistor value of LED (with different types of LED circuits). How to calculate the resistor value for different types of LED circuits This tutorial will help you find the correct value of one or more LED resistors (or resistors) to connect the battery. If...

Basics of Control Relays Within the world of control, including how they build, how they work and where they are usedOver the years, hundreds of thousands of different types of control relays have been used to control almost every task in commercial and industrial processes. T...

How to test a diode using a digital and analog multi meter – 4 ways. Test the diode with analog and digital multi meters Troubleshooting electronic devices and components Troubleshooting is an important part of electronic and electrical engineering, and basic skills and knowle...

How to check transistor with multi meter (DMM + AVO) – NPN and PNP – 4 ways How to find the base, collector, emitter, direction and position of the transistor by multi meter PNP And NPN. How to remember the direction of the transistor and pin identification, check whether it i...

What is Electrical Control Panel? Electrical control panels are designed and used to control mechanical equipment. Each one is designed for specific device configurations and includes devices that allow the operator to control specific devices. Electrical panel components cont...

Three phase electrical wiring installation in the home – NEC and IEC Electrical distribution wiring installation in 3-phase and 1-phase buildings In our today’s Electrical Wiring Installation Tutorial, we will show how to perform a three phase Consumer Unit installation from a...