CULTURAL QA 06-2023-13 Q1 What is the difference between staticelectricity and current electricity?
A1 Aravind Khumar, Electrical Engineerfrom CEG6y Current is the flow of chargesand is calculated by the rate of flow of charges in a given time. So this iscalled as the current. But as the word static refers the charges are at thestate of rest i.e they do not move. But why is itcalled static electricity? If the charges move they are called current. Considering the analogies likegetting electrocuted from carpets, charged metals, circuit boards etc. In allthese analogies the charges remain static i.e they do not move.Their total charge is the algebraic sum of each of the charges in the system. But when we touch a systemthat is charged, We are at a lower potential than the system is at. Hence in order to balance thenatures equilibrium, the charges move from the system to our body i.e a currentflows through us. This is reason weget a spike when we touch charged bodies. Hence this is called Staticelectricity ( charges are static unless they are in contact with some lowerpotential body). This isthe reason why it is necessary to discharge circuit boards by earthing them toavoid a shock, it is due to static electricity. My note-On account of the door knobs which can get charge from lightening etc, madeeither oval or round so that it cannot absorb the charge. This is more important in hill stations. Q2 Why do airlines pilots keep thecockpit door open during boarding operations? A2 Vishnu Ravi, Aviation Enthusiast |Content Creator 9h Airlines pilotschoose to leave the cockpit door open during boarding procedures for variousreasons, as stated by the search results: Facilitating the movement of individuals: Thecockpit door is kept open to accommodate the entry and exit of multipleindividuals into the flight deck before departure. For example, the First Officer is required to temporarily leave the cockpit toconduct a pre-flight external walk-around before returning. Coordinating with flight attendants: The flightattendants work in coordination with the pilots to manage the boarding process.If there are issues related to catering, aircraft cleanliness, or necessaryequipment, the flight attendants can communicate with the pilots through theopen cockpit door. Addressing security concerns: While an armoredand locked cockpit door helps reduce the risk of unauthorized interference frompassengers, it can also create other security challenges. When the cockpit door is closed,the pilots may not be aware of potential security threats outside the cockpit. Meeting operational requirements: Opening theflight deck door during flight is essential to cater to the pilots' biologicalneeds and fulfill operational requirements related to safety. In conclusion,keeping the cockpit door open during boarding operations allows for thenecessary movement of people and equipment, enables communication betweenflight attendants and pilots, and addresses security concerns. Q3 What are some facts about India thatIndians are generally unaware of? A3 Jai Narayan,May 31 Spanning over 2950km east-west and 3200 km north-south (northernmost point of India is disputedand southernmost point is considered as southernmost point of mainland India),India is geographically vaster than you may have thought. Following are someinteresting geographical facts about India: Northernmost point of India is closer to Ukraine, EastEurope than it is to southernmost point! Westernmost point of India is closer to Eritrea, EastAfrica than it is to easternmost point! Easternmost point of India is closer to North Koreathan it is to westernmost point! Kanyakumari is the southernmost point of mainland India.However, taking Andaman and Nicobar Islands into account, Indira Point is thesouthernmost point of India. And, it is closer to Australiathan it is to northernmost point! Fascinating! Q4 What is the best color to paint aroom with a white ceiling? A4 Gopala Krishnan, Former AssistantGeneral Manager 1996-2004 at Department of Telecom (1966–2004)0y It depends on thetype of room. If it is kitchen/ work area, dark brown is most suited. If it is Halleither white/yellow cream color is best. If it is bed room,light blue/ green is best My note- tastes may vary. I told what felt to me. Q5 Why is the cockpit on airlinerscalled a "flightdeck"? A5 John Scallan, Former Radar Tech atU.S. Air Force (1974–1978)16h Back in the olden days here was a type of aircraftknown as a flying boat. The flying boat was designed to fly over long stretchesof open water. The area containing the pilots was large and the controlwheels looked similar to a ships wheel. Behind the pilots was a station for the flight engineer andnext to that there was a station for the navigator. This large, combined areawas called a deck using nautical terms. At the timeaviators just borrowed existing nautical terms to describe their aircraft. The term cockpit describes amuch smaller area meant for a single pilot. Flight deck wasthe appropriate term for a much larger area containing a much larger crew. All the above QA are from Quora website on 13-06- 2023. Quora answers need not be 100% correct answers . Compiled and posted by R. Gopala krishnan, on 13-06-2023 -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/thatha_patty/288765115.2350621.1686644381749%40mail.yahoo.com.
