The picture below shows a hammer mill that is used to pulverise silage - NSC Agricultural Technology - Question 5 - 2017 - Paper 1
Question 5
The picture below shows a hammer mill that is used to pulverise silage.
Answer the questions that follow.
A
5.1.1 Identify component A in the picture above.
5.1.... show full transcript
Worked Solution & Example Answer:The picture below shows a hammer mill that is used to pulverise silage - NSC Agricultural Technology - Question 5 - 2017 - Paper 1
Step 1
5.1.1 Identify component A in the picture above.
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Answer
The component A in the picture is the Cyclone/Dust/Air Outlet.
Step 2
5.1.2 Describe the function of the component identified in QUESTION 5.1.1.
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Answer
The function of the cyclone/dust/air outlet is to separate the grounded material effectively from the air and dust release, ensuring that only pulverized material is discharged.
Step 3
5.1.3 State the function of the following components of a hammer mill:
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Answer
A. Screens: These determine the size of the final grounded product.
B. Hammers: Their function is to pulverize the fodder.
C. Fan: The fan is used to blow the pulverized material through the screens or to blow dust out of the dust release.
Step 4
5.2 Name TWO essential clothing items for personal protection that must be worn when using a push lawnmower.
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Safety boots/shoes
Long pants/overall
Step 5
5.3 Tabulate the differences between Bale A and Bale B under the following headings:
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Heading
Bale A
Bale B
5.3.1 Storage space needed
Storage space optimally utilized
Loss of space between bales
5.3.2 Bale handling
Bales handled manually
Bales handled by tractor
5.3.3 Rope consumption
Low rope consumption
High rope consumption
Step 6
5.4 State TWO functions of the type of slip clutch shown in the sketch below.
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Answer
To prevent heavy objects from being taken into the baler.
To protect the pick-up if it is impeded by anything.
Step 7
5.5 State FOUR general problems that can occur when using the combine harvester below.
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Answer
Loss of maize kernels due to blowers that are set incorrectly.
Thresher that breaks the kernels.
Various mechanical problems.
Inability to harvest when it has rained.
Step 8
5.6.1 Name the mechanism in the sketch above that is used to hitch an implement to a tractor.
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Answer
The mechanism is known as the Three Point Mechanism.
Step 9
5.6.2 Name components A, B and C, and state the function of EACH.
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A. Top Link: To lift or lower the rear of the implement.
B. Levelling Box: To adjust the cross-angle of the implement in relation to the tractor.
C. Draw Bars/Lifting Arms: To hitch the implement.
Step 10
5.7.1 Give ONE reason why air must be removed from a hydraulic system.
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Air is compressible and will influence the operation of the system.
Step 11
5.7.2 Which side of this cylinder is the strongest: A or B?
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The strongest side of the cylinder is A.
Step 12
5.7.3 Explain your answer to QUESTION 5.7.2.
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The side that is subjected to the oil pressure in the cylinder is larger on this side.
Step 13
5.7.4 Where this type of cylinder can be used and an explanation for the choice.
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This type of cylinder can be used in a Planter, where movement is needed in both directions.
Step 14
5.8 THREE factors that can cause a decrease in the value of a tractor.
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As soon as a tractor leaves the supplier it is second-hand.
Wear on the engine, tyres etc. (all acceptable answers).
New tractor models with better features come into the market.
Step 15
5.9 Calculate the diameter of the driven pulley by using the formula below. Show ALL calculations.
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