Section A
Q1.
(a) Discuss the different sources of farm power available in India. What are their merits and demerits?
(b)
Describe in brief:
(i) Why do rear wheels of general purpose tractors have tyre inflation pressure less than the front wheels?
(ii) Why is a differential lock provided in a tractor?
(iii) Why do tractors have independent brake pedals?
(iv) Why are drive wheel tyres provided with lugs in general purpose tractors?
(c)
Differentiate between the following in brief:
(i) Single action and Double action disc harrow
(ii) Throughput and Axial Flow threshers
(iii) Solid cone and Hollow cone nozzles
(iv) Seed-cum-fertilizer drill and Horizontal plate planter
(d)
Distinguish between the following in brief:
(i) Biogas and Producer Gas
(ii) Compressed Natural Gas and Compressed Biogas
(iii) AC Motor and DC Motor
(iv) Solar Cell and Dry Cell
(e)
List the factors affecting the following:
(i) Biogas production from cattle manure
(ii) Producer gas production from agricultural crop residues
(iii) Draft requirement of a tractor drawn mouldboard plough
(iv) Grain losses in a power thresher