The picture below shows a ram type of baler - NSC Agricultural Technology - Question 5 - 2021 - Paper 1
Question 5
The picture below shows a ram type of baler.
5.1.1 Explain what is meant by the timing of this baler.
5.1.2 State THREE requirements of the screens used to safegua... show full transcript
Worked Solution & Example Answer:The picture below shows a ram type of baler - NSC Agricultural Technology - Question 5 - 2021 - Paper 1
Step 1
Explain what is meant by the timing of this baler.
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Answer
The timing of the ram baler refers to the precise moment at which the needles intertwine the binding material around the compressed hay. This ensures that the bale is formed tightly and securely.
Step 2
State THREE requirements of the screens used to safeguard you from the dangerous mechanisms of implements.
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Answer
The screens must appear neat and intact to prevent any hazards.
Screens should be easily removable and replaceable for maintenance purposes.
They must be strong enough to withstand impact and protect against dangerous mechanical parts.
Step 3
Name FOUR safety mechanisms on the ram type baling machine.
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Slip clutch to prevent overloads.
Shear bolt that can break to protect the machine.
Safety cover to shield moving parts from user exposure.
Warning signs to alert operators of potential hazards.
Step 4
Give FOUR safety precautions when working with a combine harvesting machine.
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Never allow people to ride on top of the harvester.
Take note of and respond to any warning signals from sensors.
Maintain awareness of mechanical issues and fix them immediately.
Switch off the machine during maintenance to prevent accidents.
Step 5
Identify the type of gear.
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Double-helical gear.
Step 6
Name ONE disadvantage of this type of gear.
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This type of gear cannot be used in gearboxes of cars as it cannot mesh properly from the side.
Step 7
Name FOUR factors that must be considered when a new hammer mill is bought.
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Answer
The hammer mill must have a sturdy construction.
It should have replaceable wear parts for easy maintenance.
The rotor housing should close tightly to ensure operational efficiency.
Availability of parts should be reliable for future repairs.
Step 8
State THREE advantages of installing a hammer mill on a level surface.
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The mass of the laying mass is spread equally over bearings.
It helps to minimize vibrations.
It ensures that the feed looks neat and prevents damage during operations.
Step 9
Name THREE factors to be considered when attaching the hammer mill to the power take-off shaft of the tractor.
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Check that the anchor bolts of the static machine are tight.
Ensure the universal joints are properly lubricated.
Make sure the hammer mill is level to allow even functioning.
Step 10
Name TWO advantages of using this device to move heavy hay bales.
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Rear tyres of a tractor can carry the extra weight more effectively.
There is reduced risk of side overturns during operation.
Step 11
Identify the THREE components on a tractor's three-point mechanism that are used to connect this implement.
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Two lifting arms.
Top link for better orientation.
Two stabilising chains or arms for stability during operation.
Step 12
Describe the working of an automatic depth control mechanism as found on a tractor.
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The automatic depth control mechanism is activated by a sensitivity element which changes according to the ploughing conditions. The depth of the ploughing may vary when the plough penetrates too deeply into soft soil or when the plough tends to lift in hard patches of soil.
Step 13
Why is it necessary to install bearings in the drive mechanism of a pump?
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To reduce wear of moving parts.
To avoid overheating of parts.
To facilitate the extended use of parts at high speeds.
Step 14
Name ONE task that should be performed during the maintenance of this type of bearing.
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Check if seals are intact and not broken to ensure proper functioning.
Step 15
List THREE types of gearboxes that can be used in tractors.
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