👍🌷KR On Thu, 27 Jul 2023 at 07:32, '[email protected]' via iyer123 < [email protected]> wrote:
> *CULTURAL QA 07-2023-27A* > > Q1 Why do commercial propeller aircraft no longer exist? Aren’t > they more efficient? Could an engine’s manufacturer produce propeller > engines faster than a jet engine? > > A1 Vishnu Ravi,Studied Aerospace and Aeronautical Engineering > (Graduated 2015)Jun 2 > > Hey there! So, guess what? Commercial propeller aircraft still exist, but > times have changed, and let me tell you why. > > *Propeller-driven planes, my pal, they're all about fuel efficiency*. > Especially at lower altitudes and speeds, they beat those fancy jets in > that department. Oh, and they can handle shorter runways like a boss! > That makes them perfect for regional airports and those hard-to-reach > places. And here's the cherry on top: propeller aircraft won't break the > bank when it comes to buying and maintaining them. Money talks, right? > > But hey, let's not forget the downside. Propeller planes bless their > hearts, they're not as fast as jets. And you know how people are these > days, always in a rush! So, the speed factor isn't exactly winning them any > popularity contests. Oh, and the noise, my friend. Propeller aircraft can > be a bit louder than those sleek jets, and that's not exactly music to the > ears of folks living near airports. I mean, who wants all that noise > disturbing their peace, right? > > Now, here's the real kicker. Propeller aircraft, as much as we love 'em, > can be a bit high-maintenance. They need more frequent TLC compared to jets. > That means more downtime for maintenance, and airlines ain't too thrilled > about that. They want their planes up in the sky, making money! > > *So, with all these disadvantages piling up, it's no wonder propeller > aircraft have fallen out of favor.* You see, jet engines have come a long > way, my friend. They've gotten more fuel-efficient and reliable over time, > stealing the show. And let's not forget the technical challenges propeller > engines face when it comes to weight distribution and foreign object > damage. It's like trying to fit a square peg into a round hole! > > *But wait, there's hope on the horizon! Lately, there's been this buzz > about developing propeller engines that are not only efficient but also > friendly to the environment.* Sounds cool, right? But let's be real, > we're not sure if these engines can compete with the performance and > reliability of good ol' jet engines. Only time will tell. > > So, there you have it, my friend. Propeller aircraft, they're still > hanging on, but the jet revolution has taken the spotlight. > > It's like the tortoise and the hare, you know? The tortoise might have > its strengths, but the hare is the one stealing the show. Will the tortoise > catch up? Well, that's a story yet to be told. > > Q2 How can we prevent sewage odor in a home with septic tank and > drain field? > > A2 Gopala Krishnan,Former Assistant General Manager 1996-2004 at > Department of Telecom (1966–2004)Just now > > The smell appears under three conditions in the wash rooms and premises > > Tank is almost full. 2. There are blocking in the pipe line. 3. The > exhaust is blocked or cover damaged. > > First flush all toilets with pressure for a few times. > > Check areas near septic tank for wetness and foul smell > > If cover is damaged change the exhaust pipe cover. > > Still if smell occur call septic tank cleaners. > > Q3 When a plane is getting ready for take off and is going to the > runway, what powers the wheels? Is it the jet engines, or do the wheels > have their own motor? Can a plane drive backwards? > > A3 Jagrata Banerjee,Studied Aviation Updated 2y > > Thanks for the question. > > I will answer all your questions one by one. The answer might be bit long, > but read it thoroughly to understand. > > Q.) When a plane is getting ready for take off and is going to the runway, > what powers the wheels? Is it the jet engines, or do the wheels have their > own motor? > > *First of all, the airplane is pushed back from the gate by the push-back > truck, using a tow bar*. > > The airplane is then lined up on the taxiway by the push back truck. > > *After then, the pilots receive start up clearance and start the engines > one-by-one.* > > The pilots then advances the thrust levers to approximately 30–40 % of > thrust. This overcomes the friction from the wheels and, the aircraft > starts moving under its own engine power. After the aircraft has started > moving, it won't need that much thrust. The thrust is then again reduced > back to near idle; and the figure is somewhere around idle and 20%. > > So, the jet engines produce the thrust to move the airplane and the wheels > just roll due to the aircraft’s movement. The wheels don’t have their own > motors. > > The only thing that is connected to the wheels is the Tiller. It is a > device in the cockpit which is used to turn the airplane on the ground. > > Q.) Can an airplane be driven backwards?? > > Yes, an airplane can be driven backwards. It can be done by using two > methods: > > 1.) Push back Tractor: As I have told already, the push back tractor is > used to push the airplane back from the gate. It is most common in all > airports. > > 2.) Using Reverse Thrust: You will see this system, hardly in any of the > airports. Its very rare to see. It is used when the push back tractor is > unavailable or is out of service for that time. > > Reverse thrust is a method which is used to slow down the airplane on the > runway, after landing. When the thrust levers are pulled to “Reverse > Thrust’ detent, the normal airflow from the engine is blocked and is > directed forward to produce braking effect. > > This methodology can be used drive the airplane backwards. > > But this method is avoided due to the disadvantages associated with it. > Some of the disadvantages are: > > High Fuel consumption Cost Inefficient Very Noisy Possible > damages to the engine itself Dangers to Ground personnel and equipment. > Increased usage of Thrust Reversers. More maintenance cost for > airlines. > > Q4 Would the same iceberg that sank Titanic still exist today? > > A4 Erika Fernandez,Loves Boating Jul 12 > > The fate of the iceberg after the collision is not well documented, but > there are some clues and possibilities. > > *The iceberg was photographed by two ships that passed by the site of the > shipwreck shortly after the disaster*: the SS Prinz Adalbert on April 15 > and the Minia on April 26, 1912*. Both photos showed a large iceberg with > a streak of red paint along its base, indicating a recent impact with a > ship*. > > The iceberg also appeared to have some damage and cracks on its surface, > suggesting it had broken apart or melted partially. > > It is very unlikely that the iceberg that sank the Titanic still exists > today. > > According to some estimates, an iceberg of that size would have dissolved > completely within a two to three week period. > > Even if it somehow survived longer, it would have been reduced to a much > smaller and unrecognizable fragment by now. > > The longest recorded lifespan of an iceberg is about six years, which was > achieved by an iceberg named B-15 that broke off from Antarctica in 2000 > and drifted around until 2006. But, B-15 was much larger than the Titanic’s > iceberg (about 183 miles long and 23 miles wide), and it traveled in much > colder waters than the North Atlantic. > > If you want to learn more about it, you can check out some of these > sources: > > BBC - History - The iceberg that sank Titanic > > What Happened to the Iceberg That Sank the Titanic? | WIRED > > Q5 What is the science behind adrenaline making us stronger when > we are fighting or running away from something dangerous? > > A5 Robert Clouse,Disabled Veteran at Cincinnati, Ohio, USA > (2000–present)Sun > > The human body always has a system that acts like regulator, making it > operating at less than it's full power. It normally uses pain to limit > the human body's full power. Professional athletes have trained to > operate at above the normal level of that regulator system, able to operate > still with pain. Adrenaline basically almost completely shuts down that > regulator system and disables the pain system as well. > > Adrenaline has allowed combatants to continue fighting when they are > already fatally injured. Adrenaline is also why many injured people in > combat don't even know it until long after the battle is over after they > come off the adrenaline. > > Evolution created and carried on the adrenaline system to improve the > chances to survive. There isn't any animal on Earth that doesn't have the > adrenaline system as far as I know. > > Q6 Why doesn't the Moon rotate on its own axis like the Earth > does? > > A6 Abhay Dhupar, Read and make contents on outer space Wed > > Dear questioner, > > *You are partly correct in your understanding. The Moon does rotate on its > own axis, but its rotation is synchronous with its orbital period around > the Earth. This phenomenon is known as tidal locking.* > > *Tidal locking happens when the gravitational forces between two celestial > bodies cause one body to always face the other*. In the case of the Moon, > as it orbits the Earth, the gravitational forces create bulges on its > surface, causing a slight deformation. *Over time, these forces have > slowed down the Moon's rotation until it matches its orbital period*. As > a result, we always see the same side of the Moon from Earth. > > *So, the Moon does rotate, but it rotates at the same rate as it orbits > the Earth, making it appear as though it doesn't rotate at all from our > vantage point on Earth.* > > Q7 What is the difference between traditional telephone systems > and cloud telephony? > > A7 Tata Tele Business Services,Updated Jul 7 > > Difference between Traditional Telephone Systems and Cloud Telephony: > > Traditional Telephone Systems: > > · Hardware Dependent: Relies on physical infrastructure, including PBX > (Private Branch Exchange) systems, wiring, and on-premises equipment. > > · Limited Scalability: Adding or removing lines and expanding capacity is > time-consuming and requires physical changes to the system. > > · Higher Maintenance: On-premises hardware requires regular maintenance, > upgrades, and repairs. > > · Costly Setup: Upfront costs for purchasing hardware and infrastructure, > along with installation and configuration expenses. > > · Localized: Limited to a specific physical location and may require > additional infrastructure for remote connectivity. > > · Limited Features: Basic calling features with limited customization and > integration options. > > · Reliance on IT Staff: Requires in-house IT staff for managing and > maintaining the system. > > · Lower Mobility: Limited flexibility for remote or mobile workforce. > > Cloud Telephony: > > · Virtual Infrastructure: Relies on the internet and cloud-based servers > for call processing, routing, and storage. > > Scalability and Flexibility: Easily scale up or down, add or remove > lines, and adjust capacity as needed. > > · Lower Maintenance: Cloud provider manages the infrastructure, updates, > and maintenance, reducing IT overhead. > > · Cost-effective: No upfront hardware costs, pay-as-you-go pricing, and > cost savings on maintenance and upgrades. > > · Anytime, Anywhere Access: Enables remote connectivity, flexibility for > mobile or distributed workforce. > > · Advanced Features: Rich set of features like IVR, call recording, > analytics, and integration with CRM systems. > > · Reliability and Disaster Recovery: Redundant systems and data backup > ensure high availability and business continuity. > > · Easy Integration: Seamlessly integrates with other cloud-based > applications and software. > > · Customer Support: 24/7 technical support and assistance from the cloud > provider. > > Tata Tele Business Services offers a host of cloud services and voice > services,solutions to help businesses meet their objectives in a safe, > efficient and affordable manner. > > *All the above QA are from Quora website on 27-07- 2023.* > > *Quora answers need not be 100% correct answers .* > > *Compiled **and posted by R. Gopala krishnan, on 27-07-2023* > > > > -- > You received this message because you are subscribed to the Google Groups > "iyer123" 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/iyer123/215263449.4239315.1690468361519%40mail.yahoo.com > <https://groups.google.com/d/msgid/iyer123/215263449.4239315.1690468361519%40mail.yahoo.com?utm_medium=email&utm_source=footer> > . > -- 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/CAL5XZop7afq6%2BvCHfD%3DwpGKFJFSNOPKNkSopz_kin8EkUZM7Zw%40mail.gmail.com.
