1. Describe the following sources of farm power and give the merits and demerits of each.
(i) Human power [2 marks]
(ii) Animal power [2 marks]
(iii) Mechanical power [2 marks]
(iv) Biogas energy [2 marks]
2. State the function of the following parts found in a tractor drive train
(i) Clutch [1 mark]
(ii) Differential [ 2 marks]
(iii) Final drives [1 mark]
3. State four (4) major differences between diesel and petrol engines. [8 marks]
4. (i) List any ten (10) attributes of a good tractor operator. [5 marks]
(ii) Although having a farm tractor is good for field activities it may also bring along some disadvantages. List five (5) disadvantages of owning a farm tractor.
[5 marks]
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