lum401s2005.pdf

School
University of Swaziland - Kwaluseni*
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Course
ANIMAL SCI LUM401
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3
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Feb 11, 2024
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SUPP.2004/2005 PAGE 1 OF 3 UNIVERSITY OF SWAZILAND SUPPLEMENTARY EXAMINATION PAPER PROGRAMME: BSC AGRIC. 4 (APH) BSC AGRIC. ED. 4 COURSE CODE: LUM 401 TITLE OF PAPER: FIELD AND FARMSTEAD POWER TIME ALLOWED: TWO (2) HOURS SPECIAL MATERIAL REQUIRED: NONE INSTRUCTIONS: ANSWER QUESTION ONE AND ANY TWO OTHER QUESTIONS. DO NOT OPEN THIS PAPER UNTIL PERMISSION HAS BEEN GRANTED BY THE CHIEF INVIGILATOR
COURSE CODE: LUM 401 [S] JULY 2005 PAGE 2 OF 3 SECTION I: COMPULSORY QUESTION QUESTION 1 (3 (b) Explain why animal draught and manual labour (and not tractor power) are prevalent in African smaltholder farming. (20 Marks) Solar energy is the most abundant form of energy in the tropics. Briefly discuss the application (and limitations) of solar energy in smallholder farming systems in Swaziland. (20 Marks) SECTION I: ANSWER TWO QUESTIONS FROM THIS SECTION QUESTION 2 (a) Using the annual cost equation, and with the aid of a diagram, explain the determination of the optimum replacement date for farm machinery. (15 Marks) ®) Briefly discuss THREE factors that affect early replacement of farm machinery. (15 Marks) QUESTION 3 (a) With the aid of a diagram, explain how a hydrostatic power transmission system works. (15 Marks) (b) Write short notes on the following power transmission systems: @) Gear drives; (5 Marks) (i) Belt drives; (5Marks) (iii) Flexible couplings. (5 Marks)
COURSE CODE: LUM 401 [S] JULY 2005 PAGE 3 OF 3 UESTION 4 (a) Briefly discuss the following with respect to financing and access to agricultural (b) machinery: @) Bank overdraft; (5Marks) (i) Hire purchase; (SMarks) (iii) Machinery ring. (5 Marks) The performance of field machinery is greatly influenced by field efficiency. Briefly discuss the following as they affect field efficiency: Crop yield; (5Marks) (i) Soil and crop conditions; (5Marks) (ili) Field shape. (5 Marks)
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