CULTURAL QA 04-2023-01 Q1 Why would a circuit breaker not trip ifI accidentally shorted hot to neutral?
A1 Raghunath Rompicherla, ExperiencedElectrical Engineer Upvoted by Elad Lending, Practical Electrical Engineer,Lecturer in Electricians Course, 25 years exp.1y Circuit breaker requires sufficient current for it to trip.May be, the current was not enough. It depends on, # how far the shortwas away from the source # how good wasshort (is it bolted or loose with some resistance, also how good were thoseconnections between source and the location of short ) # what was the breaker rating - higher rating breakerrequires much more current to operate # settings on thecircuit breaker (applicable in case of CB with settable protection) My note- Very informative. For high capacity airconditioners circuit breaker with high current carrying capacity is requiredboth at equipment and in the distribution panel. Q2 What is normal in your country butweird in the rest of the world? A2 Augustine Elioku, Indian kid fromNigeria. Updated 4y Nigeria is a greatcountry with over 500 tribes and languages.There are so many things we do thatwould be considered weird by other countries. Let me give youjust 3 main norms in Nigeria that are weird in other countries. 1. EATING WITH OUR HANDS. In Nigerian we loveto eat out indigenous foods with our hands.It's a norm here that made even MarkZukerburg use his hand.It may seem weird in many countries but we enjoy ithere. 2. HAWKING In Nigeria hawkingis a norm and its now part of our lives. We do buy things on the bus in traffic from hawkers andthey really help because you can't stay in traffic for an hour with all theheat and smoke without wanting one of this.Hawkingis a norm here. 3. YOU HAVE TO UNDERGO ALL THREE TYPES MARRIAGES BEFORE YOUGO HOME WITH YOUR WIFE. Before you go homewith your wife you have to undergo these three types of marriages before goinghome with your wife in Nigeria: TRADITIONAL MARRIAGE: This is a must inNigeria, without seeing the parents and doing all necessary things in thevillage of the bride YOU CAN'T GET MARRIED TO A NIGERIAN LADY, The mostimportant aspect of it is the "PAYING OF BRIDE PRICE", COURT WEDDING: You have to getyour marriage certificate from the court so this one is a must in Nigeria too.Youhave to make your marriage legal (Recognised by the Government) WHITE WEDDING: Due to howReligious we are in Nigeria we always make sure every couple gets married in the church or mosque. Now we also afterthe religious rites have been performed and completed, we move into the secondaspect of the white wedding THE RECEPTION. This is where weeat and dance and celebrate because after this last set of marriage the Groomcan now take the bride home.All these Norms makes NIGERIA unique and specialdespite all political difficulties and challenges. Edit Well it seems like point 1 and 2 share so many things incommon with our Indian brothers.I feel I'd be correct to say I'm also an Indiannow. Q3 How could mules be so widespread in themedieval times? Purposefully breeding a horse and a donkey seems to be an awfullot of trouble to create a sterile animal, when the same gestation period couldbe used to breed more horses and donkeys? A3 James M. Volo, Contributor/Ed ofEncyclopedias of History (1998–present)Updated Mar 25 It’s not really so much trouble.Mules resemble donkeys but are larger and stronger. They also eat cheaper food and have more stamina than a horse of the samesize. They also have tougher hooves thanhorses, which makes them better suited to carrying burdens over rough terrain. Finallytheir usefuil life is a great deal longer. For thesereasons, it has been suggested that mules have been bred for at least 5,000years. An early 18thcentury illustration. Mule breeding. The mare stands in a pit to assist thejack in mounting. In fact, the ancients viewed those rare cases whenanimals of different types produced useful offspring as portentous miracles anda gift of the gods. As noted elsewhere in this thread,breeding moderate quality stock (mares) to produce useful mules rather thanmoderately useful horses made sense. The famous twenty mule team In the middle ofthe 19th century in America, pioneers taking the migrant trails west paid $75 for a single mule whena horse cost $50. After the Civil War, a good team of mules cost $700 / pair. There were withoutdoubt endless arguments about the comparative qualities of mules as draftanimals for everyday farm use. In 1849, James Stewart, a mule proponent,expressed the following sentiment on the subject, “It is a noble sight to seethose small, tough, earnest, honest Spanish mules, every nerve strained to theutmost, examples ofobedience, and of duty performed under trying circumstances.” Mules at war — WWII— where trucks could not go. Q4 Which mughal emperor had the longestrule? A4 Sahani Satish, Electronic AndCommunication Engineer Tue The Mughal emperor who had the longest rule wasAurangzeb, who reigned from 1658 to 1707, a total of 49years. Aurangzeb was the sixth emperor of the Mughal dynasty and succeeded his father, Shah Jahan. During his long reign, Aurangzeb expanded the Mughal Empireto its greatest extent and was known for hisreligious policies, which were characterized by his strict adherence to Sunni Islam. Q5 How do I convert a 9V AC to 60V AC? A5 Vishvajit Das, Studied Electronics atMaharashtra State Board of Technical Education (MSBTE)Wed To convert 9V AC to 60V AC, you would need to use astep-up transformer with a turns ratio of 1:6.67(60V divided by 9V). This will increase the voltage level of the AC signal. Here are the general steps to follow: Obtain a step-uptransformer with a turns ratio of 1:6.67. Connect the primarywinding of the transformer to the 9V AC source. Connect thesecondary winding of the transformer to your load. Turn on the ACsource and check the voltage across the load using a multimeter or voltagemeter. The voltage should now be approximately 60V AC. It isimportant to note that working with high voltages can be dangerous and shouldonly be attempted by experienced individuals with the proper equipment andsafety precautions in place. Q6 Why do wires hang between electricpoles? A6 Prashant Srivastava, B. Tech., MBA inElectrical Engineering & Power Electronics, Indian Institute of Technology,Kanpur (IITK) (Graduated 1976)Mar 26 Overhead conductorsare flexible. Dependingupon distance of the poles and temperature difference (Max. to min.) certainamount of slack has to be given to take care of expansion and contraction dueto change in temp. So wire hang insummers and get tighter in winter. My note- Though answered by an IIT, he has notmentioned aboutweight of the conductor. The weight of the conductor also makes thewire sag. It cannot be more tightened because there is possibility of the wire break or break the insulator to which it is tied. The technical word is tension of theconductor. Q7 What is a fact that everyone shouldknow? A7 Chimi Rinzin, Guardian of PeaceUpdated 7mo ***Drink wherethe horses are drinking since they will never consume tainted water. Put your bed wherethe cat sleeps, it loves calm. Whatever fruit theworm has touched but not penetrated, it is always looking for the ripe fruit. And plant your tree where the mole digs, for that isfertile land. Build your housewhere the snake sits to warm itself, for that is the stable ground that doesnot collapse. ***Dig to findthe water where the birds hide from the heat. Wherever the birds stand, thewater hides. And go to sleep andwake up at the same time with the birds - that's the quest for success. Eat more vegetables- You will havestrong legs and a resistant heart like jungle animals. Swim whenever youfind time and you will feel like you are on land like fish in water. Look at the sky asmuch as possible and your thoughts will become bright and clear. ***Be calm andsilent, and peace will come to your heart, and your soul will be at peace. My note-*** are very interesting. I have not checked the authority. Q8 What are some facts about birds thatmake you fearful of them? A8 Joel Gheen, Semi-competitive distancerunner with some top-10 finishes2y The crows in your neighborhood know who you are by sight:they’re judging you, and they’re discussing you with their friends. Upset a crow enough and you may find yourself being harassed by entireflocks... for years. How do we knowthis? Researchers atthe University of Washington captured and tagged crows while wearing differentmasks with distinct faces (everybody knows crows consider capturingand tagging an egregious insult). We don’t know exactly how, but the wordspread through the entire local crow population. Before long, and even years later, any researcherwearing the “bad face” mask was harassed by scores of crows not just all overcampus, but throughout the entire metro area of Seattle.Even the crows who had never before seen those faces somehow knew to loudlyhate on anyone wearing it. Definitely judgingyou.Crows are freakily brilliant. They solve problemsrequiring multiplesolutions and integrated steps. They build tools from scratch. They learn from watching humans andinnovate on what they’ve seen. On the positiveside, crows are known to reward kind behavior from humans. If you’re consistently nice tothem, they may even start bringing you presents. Am I fearful ofcrows? No, I think they’re awesome… and I go out of my way to be nice to them.But I’m fearful of missing out on appreciating how amazing our corvid friends(or frenemies or foes) really are! My note- In the early morning I offer biscuit brokento bits to crows, sometimes even before their cawing. But I have observed many times the cawing crowcaw, wait for some others, if they don’t turn eat it’s share, keeping the balancefor them. Somehow by evening all bits would get exhausted. Earlier 8-10 crows used to siton EB line waiting for biscuit bits. Q9 What are the most mind-blowing factsabout the human brain? A9 Juan Hathaway, Business DevelopmentRepresentative at Altar.io (1998–present)2y About 75 percent of the brain is made up of water. Thismeans that dehydration,evenin small amounts, can have a negative effect on the brain functions. The human brain will grow three times its size in the firstyear of life. It continues to grow until you’re about 18 years old. Headaches are caused by a chemical reaction in your braincombined with the muscles and nerves of your neck and head. Your brain uses 20percent of the oxygen and blood in your body. Alcohol effects your brain in ways that include blurredvision, slurred speaking, an unsteady walk, and more.These usually disappear once you become sober again. However, if you drinkoften for long periods of time, there is evidence that alcohol can affect yourbrain permanently and not reverse once you become sober again. Long term effects includememory issues and some reduced cognitive function. During themummification process, Egyptians would usually remove the brains through thenose ***The humanbrain gets smaller as we get older. This usually happens sometime after middleage. The human brain begins to lose some memory abilities aswell as some cognitive skills by your late 20s. A brain freeze isreally a sphenopalatine ganglioneuralgia. It happens when something you eat ordrink something that’s cold. It chills the blood vessels and arteries in thevery back of the throat, including the ones that take blood to your brain.These constrict when they’re cold and open back up with they’re warm again,causing the pain in your forehead. Dreams are believed to be a combination of imagination,phycological factors, and neurological factors. They prove that your brain isworking even when you are sleeping. It is a myth thathumans only use 10 percent of our brain. We actually use all of it. We’re evenusing more than 10 percent when we sleep. ***Over thecourse of human evolution, brain size has tripled. Your brain usesabout the same amount of power as a 15 watt light bulb. Older brains aren't slower because they're weaker, butbecause they hold more information. Your brain is onlyabout 2% of your body mass, but uses up to 20% of its blood. The brain can survive for up to 6 minutes after the heartstops.Your brain can't feel pain. A human brain cando more computations per second than a powerful supercomputer. If your brain'scortex were laid out flat, it would be about the size of a newspaper page. My note- Items marked *** are new information to me. Q10 What is the better option: toreplace or patch a cracked wall? A10 Gopala Krishnan,Former Assistant GeneralManager 1996-2004 at Department of Telecom (1966–2004)Just now Cracks can occur inthe plastering mostly. Sometimesin the brick work also due to earth quake etc. If the crack hasaffected wall re-construct it , with proper supports to roof. If crack is only inplastering , re plaster the area. In new construction as load bearing get adjusted , therecould be cracks in wall etc. If they are minor just re-plaster it All the above QA are from Quora website on 01-04- 2023. Quora answers need not be 100% correct answers . Compiled and posted by R. Gopala krishnan, former ITS, on 01-04-2023 -- You received this message because you are subscribed to the Google Groups "Thatha_Patty" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/thatha_patty/985729741.2670054.1680356362968%40mail.yahoo.com.
