The purchase of a tractor is a huge financial expenditure for a farmer - NSC Agricultural Technology - Question 5 - 2016 - Paper 1
Question 5
The purchase of a tractor is a huge financial expenditure for a farmer.
5.1.1 Choose the implement from COLUMN B that matches the tractor in COLUMN A. Write only th... show full transcript
Worked Solution & Example Answer:The purchase of a tractor is a huge financial expenditure for a farmer - NSC Agricultural Technology - Question 5 - 2016 - Paper 1
Step 1
5.1.1 Choose the implement from COLUMN B that matches the tractor in COLUMN A.
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Answer
The implement that matches the tractor in COLUMN A is (c) B.
Step 2
5.1.2 Give FOUR reasons to support this statement.
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Answer
Smaller financial expenditure: Tractor (c) is generally more cost-effective for vineyard work.
Cost-effective: It consumes less diesel, making it more economical over time.
Better adaptability: Tractor (c) fits well into narrow rows, suitable for vineyards.
Soil health: It does not compact the soil, allowing for better crop growth.
Step 3
5.1.3 Name FOUR technologically advanced devices.
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Variable Rate Technology (VRT)
GPS technology
Four-wheel driving
Power steering
Step 4
5.2 Name parts A, B and C in the transmission assembly.
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A - Flywheel
B - Clutch plate
C - Pressure plate
Step 5
5.3.1 Identify the types of baling machines, A and B.
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A - Round baler/Roller type
B - Rectangular baler/Ram or piston type
Step 6
5.3.2 Describe how the bale density may be changed in baler B.
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The bale density can be changed by increasing or decreasing the resistance to the hay moving through the baling chamber.
Step 7
5.3.3 Give THREE reasons why a farmer would prefer baler B instead of baler A.
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Storage space optimally utilized since it creates rectangular bales.
Bales are stored easily, making them more convenient for handling.
The continuous baling process increases efficiency.
Step 8
5.4 Describe the process of harvesting maize with a combine harvester.
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The process begins with the combine harvester cutting the maize plants.
Next, the maize is fed into an auger, which transports it to the thresher chamber.
Here, the thresher separates the kernels from the maize stalks.
An auger then moves the kernels to the grain bin for storage, ensuring a continuous flow of harvested material.
Step 9
5.5 Name THREE safety requirements when working with the hammer mill.
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Ensure that there are no loose objects lying inside the machine before starting it.
Wear safety goggles and other personal protective equipment.
Do not operate the machine if it is out of balance.
Step 10
5.6 Identify the TWO types of hydraulic cylinders.
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A - Single-action cylinder
B - Double-action cylinder
Step 11
5.7 Explain why the drive shaft must be equipped with a sliding joint.
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The drive shaft must be equipped with a sliding joint to allow flexibility and movement during operation.
This prevents stress on the components while accommodating the distance between the tractor and the implement.
Step 12
5.8 Name TWO running expenses of a tractor.
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Fuel costs related to the tractor's fuel consumption.
Lubricants (oil and grease) required for regular maintenance.
Step 13
5.9.1 Determine the gear ratio of the final drive.
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The gear ratio is calculated as follows:
ext{Gear Ratio} = rac{ ext{Number of teeth on drive gear}}{ ext{Number of teeth on driven gear}} = rac{22}{44} = 1 : 2
Step 14
5.9.2 Explain why the final drive increases the torque.
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The final drive increases torque because the drive gear is smaller than the driven gear.
This reduction results in increased torque while decreasing speed.
Step 15
5.9.3 Calculate the speed of the driven gear.
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To find the speed of the driven gear, we use the relationship of gear ratios:
ext{Speed} = rac{ ext{Speed of drive gear} imes ext{Number of teeth on drive gear}}{ ext{Number of teeth on driven gear}} = rac{200 imes 22}{44} = 100 ext{ r/min}
