Dark matter is an invisible matter in the space that can hold the stars into the galaxy. They have no effect of electromagnetic force on it, which means it does absorb, reflect or emit light that makes them practically invisible.
2. What is Wave-Particle duality?
When matter and light exhibits properties of both waves and particles, it is referred as Wave-Particle duality. For instance, Light can behave like wave when it shines through narrow slits while, when exposed to some metal surface it will spray electrons acting as a particle. So under different conditions it will act.
3. Explain what is Quantum Physics?
The understanding of behavior of matter and energy at the molecular, nuclear, atomic and even microscopic levels is referred as Quantum physics
4. Tell me why did you choose to apply with us?
Actually I got information of this program through BARC. I want to persue carrier in nucLear science and when I got to know that I could have masters in this field then I considered it a brightest opportunity to look after this program.
5. Explain me do you believe nuclear fusion will soon be a reliable power source?
It is possible. But first we have to become self reliable in nuclear fission itself. Because nuclear fusion requires a very large amount of energy to fuse the atoms. And this kind of energy can be obtained by fission itself. There is no other way in present days to achieve such amount of energy except for nuclear fission.
6. Do you know what is shearing stress?
Shearing stress is the ratio of the tangential force F to the area of the face BCGH over which it is applied. The ratio shearing stress is divided by shearing strain is the shear module or co-efficient of rigidity, n
Shearing stress = const
Shearing strain
7. What is Uncertainty principle?
Uncertainty principle tells that the momentum and position of a particle cannot be measured precisely.
8. Tell me do We Really Need Nuclear In Order To Deal With Global Warming?
Preventing dangerous warming of the planet due to human emissions of greenhouse gases will require that we cut our emissions by 80 percent over the next 40 years at the same time that global energy demand is expected to double or triple. Doing so will require that we produce vast amounts of zero carbon energy. At present, the only way we know how to do that is with nuclear energy.
9. Explain me what are your career goals as Nuclear scientist?
Research in leading field of science was my primary goal since childhood. But would also like to associate my self with a profession that leads to a direct development of the society and common people.
10. Tell me what Is The Difference Between Cathode Ray And Beta Ray?
Actually normal on the wave front called RAY, in the beta radiation there is wave packet and hence no wave frant. in cathod ray there is electromegnatic radiation and we can use word ray but in the case of beta partical we use word beta radiation instead of betaray.
11. Tell me what is Parallax and Distance Measurement?
To measure the distance to nearby stars, astronomers use an effect called Parallax. Parallax is the apparent displacement of an object because of a change in observer's point of view, for instance, when we look at object with one eye shut and then doing the same with other eye, there is a difference in the position of the object this is known as Parallax.
12. Explain why Is Heavy Water Used As A Moderator?
Heavy water is water highly enriched in the hydrogen isotope deuterium.we can compare the neutron inatractions with billiard ball collision, where neutron collids wth nucleus of other automs & lose energey. If the colliding nucleus size is small like hydrogen nucleus it will lose maximum energey. If nucleus is hevy the neutron hits the nucleus just changes its direction but not that much chnage in the energy of neutron. So we use heavy water as moderator to slow down neutrons.
13. Tell me are you efficient with your time as Nuclear scientist?
I need to understand things properly without a proper understanding I prefer not to procede further and understanding something needs time.
14. Tell me what Is Fertile Material And Fissile Material?
Not all the Uranium extracted from the ore can be used as fuel for plant for carrying out the fission reaction. Natural uranium consists of 99.3% of 23892U and only 0.7% of 23592U. Out of these isotopes, 23592U is used in fission reaction
Materials such as 23392U, 23592U,and 23994Pu are called fissile material or fissionable materials. This material is required to carry out the fission reaction.
Materials such as 23892U and 23290Th which occur in nature are called fertile materials. Fissile materials (23392U, 23994Pu ) can also be artificially be produced using fertile materials.
15. Tell me can extraction be made safe?
Millions of tons of toxic waste is created at the start of the “nuclear chain” with uranium extraction producing radioactive rock, dust and water - resulting in contaminated water supplies and skyrocketing cancer, kidney and other deadly diseases in communities near uranium mines. The extraction jobs are some of the most dangerous anywhere, with workers regularly overexposed to radiation. Is the human and environmental cost of uranium extraction being properly included on the cost side of nuclear power?
16. Explain me what Are The Particles Used In Nuclear Fission?
High energy alpha particles, protons, deuterons, X-rays as well as neutrons can be used for the fission process. However neutrons are chosen because neutrons are electrically neutral in nature and thus they do not require high kinetic energy to overcome electrical repulsion from the positively charged nuclei and can participate in fission reaction.
17. Tell me how Was Participation In The Process Determined?
The Carnegie Endowment began this initiative in early 2008 by contacting each company that it knew to be exporting nuclear power plants at the time. The list was expanded subsequently in response to market developments. If, in the future, additional companies seek to export nuclear power plants, they will be invited to subscribe to the Principles and participate in their future review and implementation.
18. Explain me can't We Solve Global Warming With Renewables?
We've made a lot of progress with renewables, but they are still costly, intermittent, and difficult to scale. Without utility scale energy storage technologies, which remain unviable, you simply can't run a modern society on wind and solar alone. Some places, like Germany and Denmark, have achieved higher levels of wind and solar, but they have done so through heavy, historically unprecedented deployment subsidies, that can't be sustained. Furthermore, these societies remain overwhelmingly dependent upon fossil energy: Germany got 70 percent of its electricity from fossil fuels in 201212 versus 5 percent from solar and 7 percent from wind.
19. Basic Nuclear Scientist Job Interview Questions:
☛ How important are the following: safety, rules, and procedures when dealing with nuclear energy?
☛ Why are typical cooling towers curved inward?
☛ What is your greatest weakness? What are you doing to improve it?
☛ How do you practice safety on the job?
☛ What are your career goals?
☛ If hired, how do you intend on making a difference with our company?
☛ Would you feel comfortable working with or under someone who does not have a college education?
☛ Tell me about a time you worked effectively under pressure.
☛ Can you program in Java?
☛ How do you handle stressful situations?
☛ Are you efficient with your time?
☛ Do you work well on a team?
☛ What is your greatest strength?
☛ Why did you choose to apply with us?
☛ Why a career in nuclear power?
☛ Why is nuclear power a great energy source? In your opinion.
☛ Have you ever been involved in an emergency setting? What actions did you and your team take?
☛ Tell me about a time when you made a mistake. How did you correct the mistake?
☛ Where do you see the future of nuclear power in the next fifty years?
☛ Do you believe nuclear fusion will soon be a reliable power source?
☛ Tell us about a time when you were particularly effective on prioritizing tasks and completing a project on schedule.
☛ Why is it so important to follow the details so precisely in nuclear energy?
☛ What do you know about our company?
☛ Why are you the best candidate for us?
☛ Do you manage your time well?
20. Tell me why are typical cooling towers curved inward?
Cooling tower are meant to absorb the heat dissipated by the system using cooling fluids. A curved nature maximizes the area which comes in the contact with the heat. And so heat transfer rate is higher.
21. Tell me why is nuclear power a great energy source? In your opinion?
We are getting too much dependent on fossil fuels. The oil prices are already high and also it is not convenient for the environment. Our major economy is dependent of coal but according to statistics it would require a million times less uranium than the coak to produce same amount of energy every year and that too without gren house emissions so nuclear technology is indeed a great source of energy.
22. Tell me what Is Meant By The Rest Mass Energy Of An Electron?
According to the Einstein's Theory of Relativity, the mass of a body (say a particle) depends on the energy and on the momentum (say the velocity) with which the particle moves.
So, we have a problem: is there a mass value that every observers can relate to? Yes: is the rest mass, that is the mass you could measure in a frame of reference co-moving with the particle (in which the particle is still), that is the center-of-mass frame and that coincide with the minimum value measurable for every observers.
23. Tell me what Does Held Nucleons Together In A Nucleus?
Nuclear force. It is the nuclear force which binds the nucleons together and is responsible for the stability of nucleus.
24. Explain what Is Chain Reaction And How It Is Controlled In Nuclear Reactor?
In fission reaction during every stage two or more daughter nuclei is released, two or more neutrons and vast energy is released. Each neuron produced further participate in fission reaction and results in release of more neutrons, this reaction continues results in nuclear explosion. However in nuclear reactor the excess neutrons produced will be absorbed using moderator and control rods allowing only one neutron per fission to carryout further chain reaction.
25. Tell me what is Quantum entanglement?
Quantum entanglement is one of the central principle of quantum physics, which means multiple particles are linked together in a way that the measurement of one particle quantum state determines the possible quantum of the other particles
26. Tell me can't We Become More Energy Efficient Instead Of Using More Energy?
We are vastly more energy efficient than we were just a few decades ago, much less a few centuries ago. Yet, even as we've become more efficient, we've also continued to use more energy. That's because energy efficiency makes energy cheaper, and the result is that we find more ways to use it. Just a few years ago, nobody had heard of the cloud, and two decades ago nobody had heard of the Internet. Today, more of us than ever are able fly around the world. We fill our homes with 50-inch televisions and all manner of networked devices. We transform billboards and skyscrapers into gigantic LED video screens. Efficiency is good and we should strive for more, but it won't eliminate the need to develop enormous quantities of cheap and zero carbon energy to meet the demands of the growing global economy.
27. Tell us what is the unit to measure the heat resistance?
Ohm is the unit to measure the heat resistance.
28. Tell me doesn't Cheap Natural Gas Make Nuclear Uncompetitive?
Cheap gas is making coal, nuclear, renewables, and virtually all other energy technologies less competitive. But that didn't happen by accident. The shale gas revolution, which dramatically lowered the price of gas in the United States, was made possible thanks to three decades of public investment in better drilling technologies. This is why investing in next generation nuclear technologies right now is so important. so that we have a new generation of cheap nuclear technologies that can replace fossil energy in the coming decades.
29. Do you know what Other Industries Have Adopted Similar Codes Of Conduct?
The process that produced the Principles of Conduct, as well as the Principles themselves, reflects a recent trend in the management of global challenges. Leading national and transnational industries [business sectors], such as the oil and gas, apparel and pharmaceutical industries, have come to recognize that their reputations as socially responsible actors are key to their long-term business success. Some industries with similar codes of conduct include:
☛ Manufacturing (The Fair Labor Association, Worldwide Responsible Apparel Production)
☛ Extractive (Voluntary Principles on Security and Human Rights, Extractive Industries Transparency Initiative, International Council on Mining and Metals)
☛ Financial (Equator Principles, UN Principles for Responsible Investment)
☛ Electronics (Electronic Industry Code of Conduct)
30. Do you know history Of Nuclear Reaction?
Bigger nucleus broken to from two lighter nucleus and two or three neutrons is called nuclear fission used for making atom bomb two ligther nucleus joined to form bigger nucleus is called nuclear fusion used for making hydrogen bomb.
31. Tell me why is it so important to follow the details so precisely in nuclear energy?
Nuclear engineering is a dangerous technology. And technically if we see the anatomy of the reactions we can conclude that a very vast amount of energy is released in a very short time through a chain reaction and here we are only going to control that chain reaction . If we are not precise in our approach... It will lead to destruction. Nuclear plant will become an atom bomb.
32. Tell me how do you handle stressful situations as Nuclear scientist?
I sit and think about the scenario in and try to figure out the best way out of the situation.
33. Tell me where do you see the future of nuclear power in the next fifty years?
There is going to an enormous development in this field and in the Indian context also India has to become self reliant in the field of clean energy. And thet are new projects coming up for the purpose. But in next 50 years I see that about 25 to 50 percent of the energy distribution in India through nuclear processes only.
It is the part of an atom where whole mass of the atom is assume to be concentrated.Or it is the central part of an atom which contain proton and nuetron.
35. Explain what Is The Essential Difference Between An Electron And A Beta Ray?
The electron of nuclear origin is called a beta-particle. There is otherwise no difference between an electron and a beta-particle.
