Section A
Q1.
(a) Define farm mechanization index. Discuss the mechanization status of different farm operations in India. What is the power availability on Indian farms and their constituent sources compared to developed countries.
(b)
Differentiate between the following:
(i) CI and SI engine
(ii) Octane Number and Cetane Number
(iii) Thermal efficiency and Mechanical efficiency
(iv) Caster angle and Camber angle in tractor
(c) List the factors to be considered for the design of biogas plant. Briefly discuss the components of a biogas plant with the help of neat sketch.
(d)
Total draft of a 4-bottom trailed Mould Board plough is 2000 kg when it is moving at a speed of 6 km/h. Calculate
(i) the unit draft in kg/cm^2 if the depth of cut is 20 cm
(ii) drawbar horse power required to operate the implement and
(iii) field capacity.
(e) What is secondary tillage system? Write its objectives. Explain utility of spike tooth and spring tooth harrows.