NATIONAL OPEN UNIVERSITY OF NIGERIA
91, CADASTRAL ZONE, UNIVERSITY VILLAGE, JABI, ABUJA
FACULTY OF AGRICULTURAL SCIENCES
DEPARTMENT OF CROP AND SOIL SCIENCES
2020_2 EXAMINATION 1234
COURSE CODE: AGM314
COURSE TITLE: INTRO FARM POWER AND AGRIC MECHANIZATION
TOTAL CREDIT UNITS: 3 CU
INSTRUCTIONS: Answer four questions in all. Question one is compulsory (25 marks). The
rest carry 15 marks each.
TIME: 2:30 MINS
1.
a. In an Internal Combustion Engine, list the four cycles of events required to turn heat
into motion (12 marks)
b. Differentiate between Petrol and a Diesel engine (8 marks)
c. Machines in agriculture have advantages, list five. (5 marks)
2.
a. List four advantages of Hay conditioning (6 marks)
b. State six important criteria when selecting a farm machinery (9 marks)
3.
a. Differentiate between Primary and Secondary tillage (9marks)
b. Enumerate four purposes of tillage (6 marks)
4.
a. Name five basic engine parts (5 marks)
b. List four basic terminologies associated with the use of machines (10 marks)
5. Briefly describe the following terms:
a) horse power, (b) Draw bar power, (c) PTO power (d) brake power (15 marks)
6.
a. Elucidate the difference in the power train of a tractor (8 marks)
b. Mention two methods power can be transmitted for agricultural work (7 marks)
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