This book has been written to meet the requirement of students getting knowledge in Agricultural Engineering and Farm Machinery and Power Engineering. This book is prepared by keeping the ARS-NET syllabus of Farm Power and Machinery discipline in mind and it contains excellent collection of important points on farm machinery, farm power, ergonomics, theory of machines, energy in agriculture, instrumentation and workshop technology to meet requirements of students.The book serve as a useful resource to the agricultural engineering and farm machinery and power engineering students appearing for various competitive exams such as ICAR JRF/SRF, NET,ARS and GATE etc. The book contains a section on key notes related to important terms on farm machinery and power engineering. It is useful for better understanding of this subject.