Science and Technology

Total Questions in this section: 60
Q.What is a Live DVD?
Asked by:M. Manohar on 28/01/2019
Ans#1
A Live CD/ DVD or Live Disk contains a bootable operating system, the core program of any computer, which is designed to run all your programs and manage all your hardware and software.
Live CDs/ DVDs have the ability to run a complete modern OS on a computer even without secondary storage, such as Hard Disk Drive. The CD/ DVD directly runs the OS and other applications from the DVD drive itself. Thus, a live disk allows some one to try the OS before installing or erasing any thing on his/ her current system. Such Disks are used for testing hardware functionalities, before actual installation. To run a Live DVD, you need to boot your computer using the disk in the ROM Drive.  
Raginee
Raginee
Q.Whether Nanotubes can be used for extracting drinking water from sea?
Asked by:Raginee on 29/08/2017
Ans#1 Scientists, including those from Northeastern University and Lawrence Livermore National Laboratory (LLNL) both in the U.S.A. have developed carbon nanotube pores that can exclude salt from seawater.
They have found that water permeability in carbon nanotubes (CNTs) with diameters of 0.8 nanometre significantly exceeds that of wider carbon nanotubes.The super smooth inner surface of the nanotube is responsible for their remarkably high water permeability, while the tiny pore size blocks larger salt ions. The nanotubes, hollow structures made of carbon atoms in a unique arrangement, are more than 50,000 times thinner than a human hair.
M. Manohar
M. Manohar
Q.How to protect personal data when Internet of Things becomes popular?
Asked by:Raginee on 20/03/2017
Ans#1 Always ON nature of Internet of Things Devices popularity means huge amount of personal information is circulating among companies, in the Internet Cloud and elsewhere. There are few standards on how the data is protected or used. The users at great amount of risk of loosing the data as most often they have blindly accepted the terms of usage and unfavorable privacy policy. As a result the users are foregoing personal privacy, personal autonomy as well as sovereignty as human. There are good amount of possibilities to extract personal information from Pacemakers, Fit-bits, TVs etc. Now Televisions, Toasters, Bed-sheets, light bulbs, Cameras, Toothbrushes, Door Locks, Cars, Watches and other wearables are being packed with sensors and wireless connectivity. 
M. Manohar
M. Manohar
Q.Whether Mars can ever regain its atmosphere?
Asked by:Raginee on 07/03/2017
Ans#1

NASA Scientist after taking a clue from miniature magnetosphere research project have come out with findings that a giant magnetic shield into space to protect Mars from solar winds could restore the Red Planet's atmosphere, and terraform the Martian environment thus resulting in liquid water flowing once again. As per the research findings published in Planetary Science Vision 2050 Workshop, the current research being conducted to protect astronauts and spacecraft from cosmic radiation can very well be adopted in future, although today it looks like fanciful idea, on a larger scale to shield Mars.

There could be couple of challenges in the approach. Not only launching of the magnetic shield may be required but additionally, there would be a need to modify the direction of the magnetic field so that it always pushes the solar wind away.

The magnetic filed shall make the atmosphere becomes thicker and according the the team estimates Mars's climate would become around 4 degrees Celsius (7.2 degrees Fahrenheit) warmer, which would be enough to melt carbon dioxide ice over the Red Planet's Northern Polar-cap. If this happened, the carbon in the atmosphere would help to trap heat like it does on Earth thus triggering a greenhouse effect that could melt Mars's water ice, giving the Red Planet back its liquid water in the form of flowing rivers and oceans.

If all of this were to occur as the team anticipates – and admittedly, that's a pretty fantastical if – it's possible that, within the space of a couple of generations, Mars could regain some of its lost Earth-like habitabilities.

Read more: sciencealert.com

M. Manohar
M. Manohar
Q.When was the 13th Agri Science Congress held?
Asked by:M. Manohar on 23/02/2017
Ans#1 The 13th Agri Science Congress is held in Bangalore starting from 21st February 2017. About 2,000 agricultural scientists from across the country and some from outside have congregated to prepare a plan of action to make Indian agriculture ‘climate smart’ and insulate it from the vagaries of weather.

The congress held for the first time in Karnataka, was jointly organized by the University of Agriculture Science, Bangaluru (UAS-B), National Academy of Agricultural Sciences (NAAS) and Indian Council of Agricultural Research (ICAR).

Climate change and variability, adaptations for climate change, mitigating its impact, farmers’ innovative methods to mitigate climate change and capacity building for climate resilient agriculture & policy issues were some of the sub-themes of the Congress.

Read more at nyoooz,com
Raginee
Raginee
Q.What service Virtual Network Operator (VNO) provides?
Asked by:Ajay Sharma on 04/06/2016
Ans#1 Virtual Network Operators is a term used to regularize the agencies who can offer Internet based voice calling and other services to mobile users which are serviced through Internet. After considering the recommendations of TRAI on VNO, the Indian Government has decided to grant Unified Licence VNO (UL-VNO). As per the decision, VNOs are going to be treated as extension of Network Service Operator or telecom service providers and they would not be allowed to install equipment interconnecting with the network of other NSOs.
Sanjeev Jain
Sanjeev Jain
Q.What is the SpaceX?
Asked by:Reena Gaur on 18/01/2016
Ans#1 Space Exploration Technologies Corporation (SpaceX) is a company founded by Mr. Elon Musk in year 2002 which designs, manufactures and launches advanced rockets and spacecrafts. SpaceX is headquartered in Hawthorne, California (USA) the obhective of creating the technologies to reduce space transportation costs and enable colonization on Mars. It has developed the Falcon-1 and Falcon-9 launch vehicles, both of which were designed from conception to eventually become reusable, and the Dragon Spacecraft which is flown into orbit by the Falcon 9 launch vehicle to supply the International Space Station (ISS) with cargo.
M. Manohar
M. Manohar
Q.When ITU-T Standards are released?
Asked by:Reena Gaur on 16/11/2015
Ans#1 The International Telecommunications Union (ITU) is an international organization within the United Nations system, which was founded in 1948 but its existence dates back to 1865. The ITU Charter is to produce telegraphy and telephone technical, operating, and tariff issue recommendations. The ITU Committee formerly known as the CCITT was renamed the Telecommunications Standardization Sector and in now referred to as the ITU-T. The ITU-T is a United Nations Sponsored Treaty Organization and one the three ITU Sectors.
Until year 1988, the ITU-T published approved recommendations once every four years in the form of a set of books that were often referred to by the color of their covers - red, yellow, blue and so forth. However, later an accelerated standards process has been adopted and all subsequent recommendations are published when released.
For more information please visit the Website of ITU
Pooja Sharma
Pooja Sharma
Q.How do you define Software Engineering?
Asked by:Rahul Gupta on 05/11/2015
Software Engineering Ans#1 The Institute of Electrical and Electronics Engineers (IEEE) defines Software Engineering as the application of a systematic, disciplined, quantifiable approach to the development, operation and maintenance of software.
Another definition of the Software Engineering defines it as a discipline that addresses the Economic, Design, Maintenance and Implementation aspects of the Software and its development.
Pooja Sharma
Pooja Sharma
Q.Why Windows-10 is free?
Asked by:Reena Gaur on 15/07/2015
 Windows10 Ans#1 Microsoft is making the biggest and most important product, Window-10 in its history, a free upgrade. The decision is primarily to get priority from App developers who choose the platform based on popularity and number of users.

Windows 10 is an attempt to create an era of more personal computing. This vision framed work on Windows 10, moving Window from its heritage of enabling a single device – the PC – to a world that is more mobile, natural and grounded in trust. Microsoft believes your experiences should be mobile – not just your devices. Technology should be out of the way and your apps, services and content should move with you across devices, seamlessly and easily.

Read more on Window-10 at Microsoft Website

Pooja Sharma
Pooja Sharma
Q.What are the key highlights of Digital India Programme?
Asked by:Reena Gaur on 06/07/2015
Ans#1 The Indian Government announced the Digital India Programme on 29th June 2015 which aimed to empower the people of India by using the fast and everywhere network connectivity. According to PM Shri Narendra Modi, the programme will enable investment of Rs 4.5 lakh crore and ensure jobs for 18 lakh people.

C-DOT, the research and development institute of the department of telecommunications has launched on 6th July 2015 four broadband products developed to fast forward the Digital India initiative. These products are long distance WiFi system, solar-powered WiFi system, 100 Gbps optical fibre cable (OFC) link and C-DOT’s next generation network (NGN) in the MTNL network.

The long distance WiFi system is capable of extending WiFi and IP connectivity to the remote parts of India in a cost-effective and power-efficient manner, and is capable of providing 100 Mbps broadband speed. The solar-powered WiFi system operates in license-exempt bands of 2.4 and 5.8GHz is specifically designed for outdoor environments and inaccessible terrains, where there is no guarantee for continuous power.

Pooja Sharma
Pooja Sharma
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