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General Topics Articles
Page 22 of 35
What is the difference between scramjet and ramjet engines?
Both scramjet and Ramjet are types of jet engines. A ramjet is an air breathing jet engine which is usually associated with supersonic transport. Ramjets can start at supersonic speeds only, so as a result they cannot be started at zero velocity and cannot produce thrust as there is a lack of airspeed.Hence assisted take off flights or rockets are needed to or accelerate it to a supersonic speed from which it starts producing thrust. This makes ramjet engine to be efficient only at supersonic speeds as it can accelerate to speeds of about Mach 6. Ramjet has revolutionized Rocket ...
Read MoreWhat is the daily routine of an average person?
Are you tired of popular social networking sites like Facebook or Instagram? Here are a few upcoming websites just like Instagram or Facebook you would love to try:PathIt is one other app for social networking purposes that lets you connect with the closest people. The only difference between Facebook and Path is the scope of connectivity. The Path app does not connect you with strangers; it connects you with family and closest friends.TumblrOne platform that is mainly driven by images and numerous amusing GIFs, videos, audio, chats, text files, quotes, and so much more. Recently, Tumblr has provided its users ...
Read MoreWhat is a robonaut? Can it replace astronauts in the future?
Robonaut is a NASA robot, which is designed as a humanoid. The artificial intelligence makes it easier for Robonaut to do the same jobs as a human. Robonaut could help with anything from working on the International Space Station to exploring other worlds. The core idea behind the Robonaut series is to have a humanoid machine work alongside astronauts. Its form factor and dexterity are designed such that Robonaut can use space tools and work in similar environments suited to astronauts.These new space explorers won’t need space suits or oxygen to survive outside of the spacecraft. Thus they might help ...
Read MoreWhich is the coldest planet in the solar system?
Neptune is the coldest planet in the solar system as Pluto has been excluded as it was regarded as a dwarf planet. It is the eighth and farthest known planet from the Sun. It has 17 times the mass of Earth and is the fourth largest planet in the solar system. It takes 164.8 years for Neptune to finish one revolution around the sun and the elliptical orbit of Neptune is inclined 1.77° compared to that of Earth.Voyager 2 is the only spacecraft that visited Neptune. It analyzed Neptune's rotation, tilt, weather conditions and also its moons and ring systems.Physical ...
Read MoreWhat are the career options for a post graduate in biotech?
Although India does not yet have a good setup for Biotechnology, there are career options galore after you have completed your post graduate in biotech. Whether you have completed your post-graduation in Biotech from the reputed institutes in India such as, Tata Institute of Fundamental Research or Indian Institute of Science, or from any university situated abroad, it’s a high-level training that matters.According to industry experts like Dr. Yusuf Deeni, post completion of Masters in Biotechnology, one can find employment in biotech companies or can even pursue Ph.D.One can also be a part of biofuels, healthcare, cleantech and industrial biotechnology.For ...
Read MoreWhat is meant by a rocket propellant?
A rocket can be an aircraft, spacecraft or a missile which is propelled by a rocket engine. A rocket engine works on the principle of Newton's Third law, that is, for every action, there is an equivalent and opposite reaction. Rocket propellant is the fuel which burns and produces thrust to propel the rocket.The propellants are usually fueled together with the oxidants. Oxidants are required to burn the fuel efficiently. Thus the chemical reaction in the combustion chamber produces the required energy for thrust.The propellant is burnt in a controlled manner in the combustion chamber of the rocket engine and ...
Read MoreIs engineering really losing its worth by the time?
Yes, engineering has indeed lost its value over the years. Given that there are several engineering colleges in India and umpteen engineers are being produced each year from these colleges. However, the question is, if India needs so many engineers and if they are all good to be employed why they have trouble in getting jobs. These questions have automatically created negativity against engineering education in India.Bangalore city alone has over 130 engineering colleges, but the employable engineering graduates are only 22% of engineering jobs (according to studies by MHRD a few years back).Decreasing employer satisfaction with fresh engineering graduates. ...
Read MoreWhat are amphibious fishes? Can they live outside water?
The fishes that can survive without water for a good amount of time are known as amphibious fishes. Convergent evolution plays an important role in these species, as the next generation species receives analogous structures that have similar function but were not present in the last generation.Many fishes are amphibious, which means they can naturally survive out of the water. These fishes have developed limbs or use lateral undulation (that is, wave-like movement patterns that act to propel an animal forward) for terrestrial locomotion. They leave water bodies for many reasons like escaping predators, low oxygen environments etc.Ancient fish had ...
Read MoreWhat is the Babinet’s principle which is the basic for Slot Antenna?
Babinet’s Principle is actually the principle used in optics. According to its definition, “When the field behind a screen with an opening is added to the field of a complementary structure, the sum is equal to the field when there is no screen”The images clearly explain the principle. In all the regions, which are non-collinear with the beam, the above two screens, in figure 1 & 2, produce the same diffraction pattern.Case1Consider a light source and a conducting plane (field) with an aperture before a screen. The light does not pass through the opaque area but passes through the aperture.Case2Consider ...
Read MoreWhat is the significance of Charminar in Hyderabad?
Charminar is a monument which was constructed in 1591, in Hyderabad, India. The literal translation of Charminar in English is 4 pillars. It is located on the east bank of the Musi River and is listed among the most recognized structures of India. There are many theories regarding the reason for the construction of Charminar but the commonly accepted theory is that it was built to celebrate the elimination of the Plague, which was widespread at that time.Charminar was built by Muhammad Quli Qutb Shah, the fifth ruler of the Qutb Shahi dynasty. After shifting his capital from Golkonda to ...
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