Basics of Electrical Engineering

Basic formula for Efficiency and How Efficiency is Solved in Cascaded circuits

EE January 25, 2018

Generally, efficiency is defined as the ratio of output power to the input power. In Electrical Engineering efficiency is defined in terms...

Power Systems

How Bundled Conductors Reduce the Corona Impact on Electric Power Lines

EE January 24, 2018

We already know that higher voltage levels (usually above than 345 kV) require bundled conductors . Bundled conductors have a large numbe...

Basic Formulas

Basic Non Electrical Units and conversions Every Electrical Engineer Should know

EE January 21, 2018

We always share a lot about the Basics of Electrical Engineering . In this post, we are sharing some nonelectrical units and their conversi...

Basic concepts

Basic conceptual Questions: Two light bulbs of 90 watt and 45 watt are connected to a 230 volt source Which one will glow brighter

EE January 20, 2018

Statement: Two light bulbs having the watt rating of 90 watts and 45 watts are connected in series with a 230-volt source (wall socket). Wh...

MCQs

Power System MCQs: Which type of fault is most menacing for the electric system

EE January 18, 2018

Which type of fault is most menacing for the electric power systems. L-G L-L L-L-G L-L-L Correct answer: L-L-L or line to line...

MCQs

Power System MCQs: The major advantage of dc systems over the ac systems is

EE January 18, 2018

The major advantage of direct current systems over the alternating current systems is: Skin effect is absent Charging current is absent...

Power Systems

Basics of Single Bus Scheme its advantages and disadvantages

EE January 18, 2018

Switches and breakers in substations are arranged in various schemes. As the name indicates a single bus scheme involves a single bus. It i...

Mathematics

Basic Trigonometric Identities Cheat Sheet for Electrical Engineers

EE January 18, 2018

Engineering involves a lot of Mathematics, in fact, it is based on the mathematics. Along with many other rules and principles, the trigon...

Basic concepts

Basics of Power Factor Triangle

EE January 17, 2018

The power factor triangle explains the relationship between real, reactive, and apparent power. Real power: It is denoted by P and is exp...

Power Factor

A load withdraws 60 kW at a PF 0.8, Calculate the Required Reactive Power to Improve it to 0.9

EE January 17, 2018

Statement: An electrical load withdraws 60 kW at PF of 0.8. It is desired to improve the PF from 0.8 to 0.9. Find the reactive power which ...

Voltage divider

Voltage Divider Example # 1: A Large Resistor of 10 Mohm with a small Resistor of 5 ohm

EE January 17, 2018

We previously learnt the basic voltage divider formula . In this post, you'll learn how voltage is divided when a very large resistor c...

Power Systems

The easiest method to calculate Capacitor rating for Power Factor correction

EE January 17, 2018

While many capacitor charts are available for power factor calculation. We can achieve the same by a simple formula, which is useful in cas...

Basic Formulas

How to Convert watt to HP and HP to watt [Formulae with examples]

EE January 17, 2018

Watts and Horsepower are two power units. Watt is an electrical unit, whereas the HP is a mechanical unit. As an engineer/technician/electr...

Power

Formula to Calculate Demand Factor with Example

EE January 17, 2018

Demand factor is a ration between maximum demand and connected load. Mathematically, Demand factor = Maximum demand / Connected load ...

Basic concepts

AC or DC: Which is more Dangerous for the Human body

EE January 16, 2018

Alternating current (AC) is almost four to five times more dangerous than the direct current (DC). AC causes grave muscular contraction...

Basic Electronics

What is the Relationship between Power Rating and Size of Resistors

EE January 16, 2018

Carbon resistors are most popular types of resistors which are widely employed in electrical and electronics projects. Did you know that ac...

Basic Formulas

Formula to find the current in Single phase AC Electrical Motor

EE January 16, 2018

The basic formula for calculating current in the single-phase electrical motor is: Let's solve an example for it. Example: Find...

MCQs

Power Protection System MCQ: Different Relays are used to provide protection against

EE January 16, 2018

Different Relays are used to provide protection against: Internal faults External Faults Reverse currents Overvoltage Correct an...

Power Systems

3 Reasons to Transmit Electricity at high voltages

EE January 16, 2018

Electrical power is transmitted at high voltages due to following reasons: Area of cross section decreases: The area of the conductor is ...

Conventional Current Flow vs Electron Current Flow

EE January 15, 2018

The conventional current flow direction assumes that current flows from the positive terminal of the battery to the negative. Whereas the e...

Basic Formulas

Basic formula to Calculate Voltage from energy and Coulomb

EE January 15, 2018

In Electrical Engineering voltage is defined as the difference in potential energy. Its basic unit is volt which is defined as the one joul...

Digital

How to Convert the Decimal Number 92 to Hexa-Decimal Equivalent

EE January 15, 2018

Our decimal number has a base 10. Whereas the hexadecimal equivalent numbers have base 16. To convert any decimal number to hexadecimal ...

Electrical Engineering vs Electronics Engineering

EE January 15, 2018

Electrical Engineering deals with the generation, transmission, distribution, operation, control and protection of electrical power (electr...

Power Systems

Voltage and Frequency by Countries

EE January 15, 2018

Given below is the list of countries along with their voltages and frequency values. Share your thoughts in comments.

Electronics

What is rated voltage / frequency and What you should Know about it

EE January 15, 2018

The manufacturers of electronic components label the rated voltage and frequencies of products on their bodies. The term rated voltage ind...

Electronics

How to Identify a Bad Voltage Regulator

EE January 14, 2018

A bad voltage regulator can be easily identified with one of these symptoms: Heating: Its temperature will be higher than usual working ...

Power Systems

What are bundled conductors and why they are used in Electrical Power Systems

EE January 14, 2018

For smaller voltages, our three-phase electrical power system uses three conductors (one conductor for each phase). With the increase in vo...

Basic formula for Efficiency and How Efficiency is Solved in Cascaded circuits

How Bundled Conductors Reduce the Corona Impact on Electric Power Lines

Basic Non Electrical Units and conversions Every Electrical Engineer Should know

Basic conceptual Questions: Two light bulbs of 90 watt and 45 watt are connected to a 230 volt source Which one will glow brighter

Power System MCQs: Which type of fault is most menacing for the electric system

Power System MCQs: The major advantage of dc systems over the ac systems is

Basics of Single Bus Scheme its advantages and disadvantages

Basic Trigonometric Identities Cheat Sheet for Electrical Engineers

Basics of Power Factor Triangle

A load withdraws 60 kW at a PF 0.8, Calculate the Required Reactive Power to Improve it to 0.9

Voltage Divider Example # 1: A Large Resistor of 10 Mohm with a small Resistor of 5 ohm

The easiest method to calculate Capacitor rating for Power Factor correction

How to Convert watt to HP and HP to watt [Formulae with examples]

Formula to Calculate Demand Factor with Example

AC or DC: Which is more Dangerous for the Human body

What is the Relationship between Power Rating and Size of Resistors

Formula to find the current in Single phase AC Electrical Motor

Power Protection System MCQ: Different Relays are used to provide protection against

3 Reasons to Transmit Electricity at high voltages

Conventional Current Flow vs Electron Current Flow

Basic formula to Calculate Voltage from energy and Coulomb

How to Convert the Decimal Number 92 to Hexa-Decimal Equivalent

Electrical Engineering vs Electronics Engineering

Voltage and Frequency by Countries

What is rated voltage / frequency and What you should Know about it

How to Identify a Bad Voltage Regulator

What are bundled conductors and why they are used in Electrical Power Systems

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