Energy is an integral part of our lives. We need energy to do all kinds of work. Though we do not realize it, energy is all pervasive. Human beings and animals derive their energy from food, which is prepared by plants using solar energy. Thus, the very basis of our lives is energy. Lots of energy was absorbed and released during the creation of the universe. Thus, it is energy that sustains the universe even today. Although the concept of energy is taught at the primary level and is included in various streams, it is rarely taught as an exclusive subject at the higher education level. In fact, the concept of energy is meant more for lifelong learning rather than studying as a subject. A few universities and engineering institutions have introduced exclusive degree courses on energy; however, technical books on energy need to be developed and made available commensurate with the latest developments. Since energy is such an important aspect of our lives, it needs to be paid due attention in education and awareness. This book attempts to present the subject in a simple and precise manner for students, aspirants of various competitive exams, and even laymen. Keeping in view the present trend of various exams, the various types of energy have been presented in the form of multiple choice questions, which is the most common pattern of examination in every field of study in the science stream. Energy-related questions feature in various national level competitive examinations, besides featuring in question papers for examinations in bachelor degree courses on engineering and technology.

This book briefly covers various forms of energy, including mechanical energy, electrical energy, chemical energy, thermal energy, nuclear energy, magnetic energy, sound energy, energy from petroleum and gas, light energy, and renewable energy, including solar energy, wind energy, biomass energy, small hydropower, tidal and ocean
energy, hydrogen energy, geothermal energy. The aspects of energy conservation have also been taken into account, designing the need for energy efficiency and energy conservation measures to be taken by various sectors.

Contents:
Chapter 1 Introduction
Chapter 2 Mechanical energy
Chapter 3 Electrical energy
Chapter 4 Chemical energy
Chapter 5 Thermal energy
Chapter 6 Nuclear energy
Chapter 7 Magnetic energy
Chapter 8 Sound energy
Chapter 9 Energy from coal
Chapter 10 Energy from petroleum and natural gas
Chapter 11 Solar energy
Chapter 12 Wind energy
Chapter 13 Biomass energy
Chapter 14 Small hydropower
Chapter 15 Ocean waves and tidal energy
Chapter 16 Hydrogen energy
Chapter 17 Geothermal energy
Chapter 18 Light energy
Chapter 19 Energy conservation
Chapter 20 Miscellaneous questions
Answers
Bibliography
About the author