WAZIPOINT Engineering Science & Technology: 11/29/23

Wednesday, November 29, 2023

Electrical Substation Equipment: Lightning Arrester and Its Functions

Lightning Arrester for Substation

A Lightning Arrester, also known as a Surge Arrester or Lightning Protector, is an essential piece of electrical equipment used in electrical substations and power systems. Its primary purpose is to protect substation equipment and the power grid from the damaging effects of lightning strikes and transient overvoltages.

Lightning is a natural phenomenon that occurs during thunderstorms when the charge separation in the atmosphere creates a high-voltage electrical discharge between clouds or between a cloud and the ground. When lightning strikes occur, they can induce extremely high voltages and currents in nearby power lines and electrical equipment, posing a significant threat to the power grid's integrity and the equipment connected to it.

Electricity from Urine: Amazing Electricity Generation

Electricity from Urine


 Image credit: 

                                     Pee-Power Urinal | Engineering For Change

How does Electricity from Urine?

Yes, it is fact; not fake. Now possible to generate electricity from human urine.

We know many ways to generate electricity from different sources around us. But the latest news is that your toilet will turn on an electricity generator. 

Yes, a team of researchers from the University of the West of England is saying urine can generate electricity. To read the details.


Basic Features of AC Motors and DC Motors

AC & DC Motors
AC & DC Motors

In our previous episode, we discussed the types of different AD and DC motors, in this article, we will discuss the basic features of AC and DC motors. You may learn the industrial motor controlling systems like the Star-Delta starter wiring diagram and its working principle or, the most industrial used Induction Motor's working principle

Tricks to Create a Strong Password


Here’s a way to make a strong password that’s very hard to crack. Follow these steps:

How to create a strong, complex password

Think of a phrase or sentence with at least eight words. It should be something easy for you to remember but hard for someone who knows you to guess. It could be a line from a favorite poem, story, movie, song lyric, or quotation you like. Example: "I Want To Put A Dent In The Universe"

Remove all but the first letter of each word in your phrase:  IWTPADITU

Replace several of the upper-case letters with lowercase ones, at random: iWtpADitU

Now substitute a number for at least one of the letters. (Here, we’ve changed the capital “I” to the numeral 1: iWtpAD1tU

Finally, use special characters ( $, &, +, ! @) to replace a letter or two -- preferably a letter that is repeated in the phrase. You can also add an extra character to the mix. (Here, we’ve replaced the “t” with “+”, and added an exclamation point at the end.) : iW+pAD1tU!


12 Tips to Create Strong and Safe Password

Creating a strong and safe password is crucial for protecting your online accounts from unauthorized access. Here are some tips to help you create strong and secure passwords:


1. Length: Use a password that is at least 12 characters long. The longer the password, the harder it is to crack.


2. Complexity: Include a mix of uppercase and lowercase letters, numbers, and special characters in your password. Avoid using predictable patterns or common sequences.


3. Avoid personal information: Avoid using personal information such as your name, birth date, or address in your password. This information can be easily guessed or obtained by attackers.


4. Unique passwords: Use a different password for each online account. Reusing passwords across multiple accounts increases the risk of multiple accounts being compromised if one password is breached.


5. Passphrase: Consider using a passphrase instead of a single word. A passphrase is a series of words or a sentence that is easier to remember but still difficult to crack. For example, "CorrectHorseBatteryStaple" is a strong passphrase.


6. Avoid common passwords: Avoid using common and easily guessable passwords such as "123456," "password," or "qwerty." These passwords are commonly targeted by attackers.


7. Randomness: Generate passwords using random combinations of characters. Use password managers or online password generators to create strong and unique passwords.


8. Regularly update passwords: Change your passwords periodically, especially for sensitive accounts. It's recommended to change passwords every three to six months.


9. Two-factor authentication (2FA): Enable two-factor authentication whenever possible. This adds an extra layer of security by requiring a second verification step, such as a unique code sent to your mobile device.


10. Use a password manager: Consider using a password manager application to securely store and manage your passwords. Password managers can generate strong passwords, store them encrypted, and automatically fill them in for you.


11. Beware of phishing attempts: Be cautious of phishing attempts where attackers try to trick you into revealing your password. Avoid clicking on suspicious links or providing your password on untrusted websites.


12. Keep passwords private: Do not share your passwords with anyone. Avoid writing them down or storing them in easily accessible locations.


Remember, the strength of your password plays a significant role in securing your online accounts. By following these tips, you can create strong and secure passwords that are harder for attackers to guess or crack, helping to protect your personal information and online identity.



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