Preface This book is intended to be used by students of B.Tech. (Agril.Engg.) and B.Sc.(Agri.) of different colleges of agricultural universities. The book covers numerous solved examples of all the major sub-topics of Farm Power & Machinery Engineering subject. Every care has been taken to explain the steps of examples in simple and understandable language with related equations and formulas. It is hoped that this book will be helpful to the students to enable their confidence to solve the numerical in the ensuring examination. This book is divided in two main sections (i) Farm Machinery and (ii) Farm Power. Farm machinery is divided into sub-section like useful formulas and equations related to farm machinery, tillage implements, sowing and planting implements, plant protection implements, harvesting and threshing machineries, other farm machineries etc. and Farm power section is also divided into subsections like useful formulas and equations related to farm power, engine power, transmission system, engine components, tractors, other sources of power etc. The author is thankful to his friends who helped in preparing the manuscript of this book. Author wish to record his sincere appreciation to Mrs. Ijsha Shakya. Mr. Hardik Shakya and Mr. Darshan Shakya who have helped me lot in bringing out this volume. The author would be feel obliged, if the readers print out the errors in the book for rectifying in the successive editions. Author is thankful to his colleagues who helped directly or indirectly in preparing the manuscript of this book. Author is thankful to the publisher M/S New India Publishing Agency, New Delhi for their keen interest in publication of this book.

1.1 Some Useful Formulas Related to Farm Machinery

2.1 Some Useful Formulas Related to Farm Power