PROJECTS IN FARM MACHINERY OPERATION 297 



8) Kind and condition of soil. 



9) Acres plowed per hour. 



10) Acres plowed per ten-hour day. 



11) Fuel used and cost per ten-hour day. 



12) Fuel cost per acre. 



13) Lubricant used and cost per ten-hour day. 



14) Lubricant cost per acre. 



15) Labor cost per ten-hour day. 



16) Labor cost per acre. 



17) Depreciation cost per acre. 



18) Interest on investment per acre. 



19) Repair cost per acre. 



20) Total cost per acre. 



Assume the following condition with reference to a one- 

 man outfit operator cost, 50 cents per hour; 10 per cent 

 depreciation on original cost of outfit; interest on invest- 

 ment at 6 per cent; cost of repairs, 4 per cent; all three 

 charged to 100 days' service. 



D. Write a report on this exercise, giving the information 

 outlined under A, B and C and also: 



1) Name of tractor. 



2) Where manufactured. 



3) Rated brake H. P. and drawbar H. P. 



4) Number of cylinders in motor. 



5) Arrangement of cylinders. 



6) Make and type of carburetor. 



7) Make and type of magneto. 



8) System of lubrication. 



9) Method of cooling. 



10) Describe the clutch and transmission system. 



