CULTURAL QA 06-2023-17A Q1 What is the effect of decreasing theresistance of a wire in an electrical circuit?
A1 Gopala Krishnan, Former AssistantGeneral Manager 1996-2004 at Department of Telecom (1966–2004)Just now Recollect Ohm’s law. V= I x R. Whenresistance is reduced current flow will increase, voltage applied being thesame. When current is increased the wire become hot, ifinsulation is less, there are chances of fire risk. This is a hypothetical answer. In practicedecreasing the resistance of a wire in the electrical circuit is not possibleunless the wire is removed and a new one is provided . One can only reduce anyresistance connected in the circuit using a wire. This appears asa question asked just for asking for a question. My note- Hundreds of similar questions appears inQuora, I select informative and interesting and simple to understand ones for myCultural QA. Q2 What's the lifespan of a Boeing 747? A2 Vishnu Ravi, Aviation Enthusiast |Content Creator 31m Unlock the full potential of a Boeing 747 withthe power of meticulous care and maintenance. The lifespan of this remarkable aircraft is influenced byvarious factors, including its make, model, and the level of attention itreceives. Imagine a worldwhere your Boeing 747 soars high for up to 30 years, surpassing the average retirement age ofpassenger jets. That's right, by choosing a trusted manufacturer, your aircraftcan be built to endure and thrive for even longer. But it doesn't endthere. Special inspection and maintenance programs hold the key to extendingthe lifespan of your aircraft. By implementing these carefully designedprograms, you can stretch its operability to approximately 30 years, beforeeven reaching the cycle limit. It's a testament to the unwaveringdedication to safety and excellence. When itcomes to the number of take off and landing cycles, the manufacturer'sexpertise is paramount.Boeing,for instance, sets an anticipated limit of 35,000 cycles for the iconic 747. The hours spent in flight contribute significantly to the aging process ofthe fuselage, wings, and engines, often leading to fatigue. However, withproper care, your Boeing 747 can conquer this challenge and continue to performat its peak. Whether youembark on long-haul journeys with fewer cycles or opt for short-haul flightswith higher demands, your aircraft is designed to withstand the test of time. Long-haul aircraftboast a remarkable design lifespan of approximately 40,000 cycles, while short-haulcounterparts can endure up to an impressive 111,000 cycles. Just imagine the possibilities. While a Boeing 747typically spans around 25 years, with the right approach, this exceptionalaircraft can exceed expectations. Don't let the world's first Boeing 747-8 BBJ, retired after only ***30flight hours and 10 years of service, deter you. By embracing propermaintenance and inspection programs, your Boeing 747 can evolve into a timelesssymbol of endurance and reliability. *** NOT CLEAR TO ME In conclusion, thelifespan of a Boeing 747 is influenced by various factors, yet with propermaintenance and inspection programs, it has the potential to reach animpressive 30 years or more. Embrace the power of longevity and take flightinto a future filled with unrivaled possibilities. Q3 My PNR status is CNF/S9/56. Will myseat shuffle after the chart is prepared? A3 Ankit Naphade, Lives in Mumbai,Maharashtra, India Jun 7 No. It will notshuffle unless you select automatic upgrade option if available. Even if youselect that, there is only 1% chance of upgradation. This happens when an upperclass seat in that train is going vacant. It's rare. The passengers whogot M coaches instead of B were different case. Recently railways announced 3ACeconomy which is termed as 'M' coach. So they announced, canceled and againre-announced. So that's why some people got 'M’ coaches when they booked 3ACwith a refund also because economy fair is little bit lower than 3AC. Concluding, youseat never changes after confirmation and it merely changes for like 1% — 2%chances in case you have selected class upgrade option. Q4 What was flying like 60 years ago? A4 John Scallan, Former Radar Tech atU.S. Air Force (1974–1978)Tue On commercial aircraft the seats were wide,the booze was cheap, thesnacks were tasty, the flight attendants were all beautiful and friendlyfemales called stewardesses, smoking was allowed everywhere, the customers werewell dresses and well behaved, the cockpit was open, and you could chat withthe pilots if you wanted. Q5 What are some mind blowing facts thatmost people don't know? A5 Fact sky, Answered by Krishna Kamat,5h The total populationof Dubai is 3.4 million.More than 85 Percent of Dubai’sPopulation Is Foreign. Home to the World’sTallest Building (Burj khalifa). The Dubai Miracle Garden Is the Largest Flower Garden inthe World. The Dubai Mall isthe world's largest shopping mall. The Dubai AquariumTank, with a capacity of 10 million litres, is the largest suspended aquariumin the world. The Burj Al Arab Hotel Uses Enough Gold to Cover the MonaLisa Painting 46,265 Times. Kissing or holding hands in public is illegaland can result in fines or deportation. Dubai Governmenthas provided air-conditioned shelters for those waiting for public transport. There are ATMs in Dubai that dispense gold bars. There is no income tax on income generated in Dubai, And nosales tax on most goods and services. Q6 How flexible are airplane wings? A6 Vishnu Ravi, Aviation Enthusiast |Content Creator Jun 8 Airplane wingspossess a remarkable degree of flexibility, enabling them to bend withoutfracturing.These wings can withstandflexion exceeding 5 meters (17 feet). The Boeing 787Dreamliner, in particular, exhibits an exceptional level of flexibility in itswings. This attributeallows for the absorption of load changes and wind gusts, resultingin a smoother and less turbulent journey for passengers. During rigorous testing, the wings of the Boeing 787 demonstrated aremarkable upward flexion of 26 feet before reaching their breaking point. Aircraft designerscarefully calculate the maximum stress that a wing may encounter during flightand subsequently reinforce it to withstand an additional 50% as a safetymargin. The purpose of designing wings with flexibility is tofunction akin to springs, reducing the perception of turbulence amongpassengers. By flexing, the wings absorb a significant portion of theturbulence that would otherwise be felt by passengers. Whileflexible wings enhance the comfort of passengers by mitigating turbulence, theyalso pose challenges to maneuverability due to the unpredictability of wingbehavior.Anticipating the precise response of a flexible wing becomes more complex. Static testingplays a vital role in the wing design process. Unlike fatigue tests thatsubject wings to operational conditions, static testing focuses solely ondetermining the point at which a wing will bend to its breaking point. In onesuch test, an aircraft wing surpassed its designated stress threshold by 154%before finally fracturing, reminiscent of a branch snapping. In the fieldof aeronautics, a flexible wing refers to an airfoil or aircraft wing capableof deforming during flight.Earlyaviation pioneers, such as those behind the Wright flyer, harnessed theflexible properties of lightweight constructions to manipulate flight throughwing warping. Q7 My car started blowing white smokefrom the exhaust, but it’s not overheating, and my mechanic told me it is fromputting too much oil in the engine. What part am I supposed to replace? A7 Erika Fernandez, Car Lover Jun 11 Too much oil in the engine can cause oil to leak into thecombustion chamber, where it mixes with the air and fuel and burns along withthem. This can produce white smoke from the exhaust,as well as other symptoms, such as reduced engine performance, increased oil consumption, spark plugfouling, or oil pressure warning light. To fix thisproblem, you need to drain the excess oil from the engine and refill it withthe correct amount and type of oil according to your owner’s manual. You also need tocheck and replace any parts that may have been damaged or worn out by theexcess oil, such as the valve seals, piston rings, or PCV valve. Before youdo that, you should first drain the excess oil from the engine and refill itwith the correct amount and type of oil. You should alsoconsult your mechanic and have him diagnose your car properly to confirm thecause of the white smoke. I hope this answerhelps you to understand what part you are supposed to replace if your car isblowing white smoke from putting too much oil in the engine. Q7 How long does it take to fix a fallenelectricity pole? A7 Gopala Krishnan, Former AssistantGeneral Manager 1996-2004 at Department of Telecom (1966–2004) Just now The question istime consumed to fix a fallen electricity pole. From the question it is understood the post is notdamaged. The post can be of metal or R C C. Whatever is thetype of pole, first the EB supply has to be disconnected either intransformer(if low voltage) or in substation if HT line. Customer feeds aredisconnected in most cases. The poles areraised after attendingto break of electric wires if any. Nowadays the poles are raised mostlymechanically using bulldozer and partially by skilled field staff. Totally mechanical LIFTING is not possible in Indian conditions. 3–5 skilled WORKINGSTAFF, and linemen and field officer must be there. Field officer is to attended more technical works. The pit has to beset right, and pole has to be inserted to pit slowly and raised slowly. Propertraffic warning has to be arranged. The sag of electricwires have to be straightened after climbing on the post by staff . The goingout cables/ wires to customers has to be reconnected by linemen. Supply has to be switched ON after alltesting. Staff has to wear all safety items and necessary tools for field work. In Indianconditions roughly the operation takes 3–5 fours. All the above QA are from Quora website on 17-06- 2023. Quora answers need not be 100% correct answers . Compiled and posted by R. Gopala krishnan, on 17-06-2023 -- 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]. 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