Good Sources of Energy
Good Sources of Energy
Energy, as you know, is the capacity to do work. You also know that in a given situation when all forms of energy are taken into account, the total energy remains constant. Energy can neither be created nor destroyed; it can only be changed from one form to another. Yet you hear about energy production, energy crisis, need to conserve energy, and so on. The term energy used in these has a slightly different meaning. In these expressions, we refer to the energy in a useful form that we can use to cook, operate machines and appliances, run vehicles, and so on.
We cannot put to use the energy available from every source. We can only put to use energy from specific sources, which we call sources of energy. For example, the potential energy of a rock high up on a hill cannot be used to cook food, but the chemical energy in cooking gas (liquefied petroleum gas, LPG) can. So, the rock is not a source of energy, but LPG is. Some common sources of energy include firewood, coal, petroleum, natural gas, flowing water and uranium. We also use the energy of the sun and the wind. So, they are also energy sources.
Good Source of Energy
These are those resources that depends on many things such as the purpose for which it is needed, available resources, capital costs, Operating costs, efficiency, renewable or not , energy storage requirement, pollution, Environmental modification, levelized cost to the customer, feasibility on large scale, unit capacity etc. What is good for a village might not be suitable for a factory. For choosing a source of energy for a particular purpose, we evaluate the following characteristics.
Energy Output per unit Volume: The energy output per unit volume (or mass) of a good source of energy should be high. The gas in a 15-kg LPG cylinder can be used by a family of average size to cook food for about a month. To cook the same amount of food using wood, you would need a roomful of wood. Clearly, the energy output per unit volume of LPG, which takes a small space in the kitchen, is much higher than that of wood.
Steady Availability: The energy source should be available readily and for a long time. For example, coal and petroleum have been readily available for a long time. Although the sun is a good source of energy, it is available only during the day. Similarly, wind energy is reliable only in those places where there is always a wind.
Safe And Easy To Use: For widespread use, the source of energy has to be safe and easy to use. A fuel that produces a lot of smoke is not a good source of energy, since it is not safe for people’s health. A nuclear power plant is not easy to build and operate. This limits the use of nuclear fuels like uranium.
Easy To Store And Transport: Most common sources of energy such as coal, petrol and LPG need to be transported to users from their points of production. They also need to be stored before use. We should be able to transport and store such sources of energy safely and economically.
Economical: The source of energy has to be economical. Hydrogen is an excellent fuel. But, it is not widely used as it is costly to produce, store and transport it.
Students / Parents Reviews [20]
Being a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thWe started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Manya
8thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
