Fuel Efficiency
Fuel Efficiency
Efficiency of a fuel is measured by its calorific value. Calorific value is the amount of heat produced by the complete burning of 1 kg of fuel. Hence, calorific value of fuel is expressed in kilo joule per kg (k J/kg). A fuel with higher calorific value is considered as an efficient fuel. When a fuel is burnt, some of the energy produced is given off as waste heat, which cannot be used for cooking or other purposes. Till the date no furl device is known to exhibit 100% efficiency.
Following are the some of the important characteristics of ideal fuel:-
1. It should have high calorific value.
2. It should have a moderate rate of combustion and should release heat in a controlled manner.
3. It should be fairly cheap and easily available.
4. It should be safe to handle, store, and transport.
5. It should not cause pollution on burning.
The essential requirements for a fire to start and continue is: | |||
| Right Option : D | |||
| View Explanation | |||
The calorific values of wood, bituminous coal , natural gas and charcoal vary in the order : | |||
| Right Option : C | |||
| View Explanation |
Place a piece of burning charcoal on iron plate and cover it with a plastic jar. The charcoal stops burning because : | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas 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
10thBeing 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
8thA 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
7thIt 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
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thAbout 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 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
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thI 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
10thMy 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.
