Section A
Q1.
(a) Define tillage. What do you understand by primary tillage and secondary tillage ? Classify implements on the basis of how they are attached to the tractor.
(b) Explain the working of 4-stroke cycle diesel engine with the help of labelled sketch.
(c) Define Ergonomics and Anthropometry. Describe in brief about the human factors considered in design of modern tractors.
(d) What is traction? Explain with proper equations/expressions how the traction can be improved under (i) sandy soil, and (ii) clayey soil conditions.
(e) Explain the working principle of a downdraft type gasifier with a suitable diagram.