1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2022 - Paper 1
Question 1
1.1 Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1... show full transcript
Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2022 - Paper 1
Step 1
1.1.1 The types of gases used in MIG welding:
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The gases commonly used in MIG welding include argon, helium, and carbon dioxide (CO₂). This mixture is favored for its ability to provide a stable arc and high-quality welds.
Step 2
1.1.2 Typical voltage range of the plasma-cutting machine:
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Plasma-cutting machines typically operate within a voltage range of 220 to 230 volts, allowing for effective cutting of various metals.
Step 3
1.1.3 Which pneumatic tool that can be used to loosen wheel nuts on a tractor:
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The tool most commonly used for loosening wheel nuts on a tractor is a torque wrench, which allows for controlled application of torque.
Step 4
1.1.4 Which ONE of the following is regarded as a secondary cultivation tool?
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The rotavator is regarded as a secondary cultivation tool, utilized for soil preparation and incorporating organic matter into the soil.
Step 5
1.1.5 A lawnmower cutting blade is manufactured from …
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A lawnmower cutting blade is typically manufactured from carbon steel due to its durability and ability to maintain a sharp edge.
Step 6
1.1.6 Which ONE of the following can NOT be used to provide drive from the tractor to the water pump on a crop sprayer?
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The V-belt cannot be used to provide drive from the tractor to the water pump on a crop sprayer, as it does not maintain sufficient drive under varied conditions.
Step 7
1.1.7 The ram-type baler is fitted with a … attached to the side of the ram to separate the hay in the baling chamber from the rest.
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The ram-type baler is equipped with a packing arm attached to the side of the ram for efficient separation of hay in the baling chamber.
Step 8
1.1.8 This action causes a wind turbine to work less efficiently:
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Lack of maintenance is a key action that results in a wind turbine working less efficiently, leading to potential operational failures.
Step 9
1.1.9 The energy contained in sunrays:
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The energy contained in sunrays is primarily solar energy, which is harnessed for various applications including solar power generation.
Step 10
1.1.10 … changes the band structure of stainless steel and causes a reduction in striking strength.
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Manganese changes the band structure of stainless steel, contributing to a reduction in its striking strength.
Step 11
1.2.1 The black gas hose of the cutting torch is connected to the acetylene gas cylinder.
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The black gas hose of the cutting torch is connected to the red gas cylinder, which is indicative of the fuel type used.
Step 12
1.2.2 Brazing is a welding process during which worn parts can be built up by padding with a wear-resistant metal.
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Brazing refers to a welding process that can utilize hard facing techniques to build up worn parts with a resistant metal.
Step 13
1.2.3 Air pollution is a serious health risk that can cause stress, fatigue and damage to the ears.
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Noise pollution is a significant health risk that can cause stress, fatigue, and even lasting damage to the auditory system.
Step 14
1.2.4 VRT systems can be used to pinpoint the exact position up to one metre.
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GPS technology is utilized in VRT systems to accurately pinpoint positions in agricultural settings.
Step 15
1.2.5 Oval bales are easily handled and storage space is optimally utilised.
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Rectangular bales are commonly preferred due to their ease of handling and optimal utilization of storage space.
Step 16
1.3.1 A method of harvesting maize in wet conditions
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Hand-picking is the method often employed for harvesting maize in wet conditions, allowing for careful collection without damage.
Step 17
1.3.2 A major cause of metal fatigue on a hammer mill
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Vibration is a major cause of metal fatigue on a hammer mill, leading to wear and potential operational failure.
Step 18
1.3.3 A welding rod used to weld ferrous parts
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A nickel welding rod is frequently used for welding ferrous materials due to its compatibility and effectiveness.
Step 19
1.3.4 A material that can be welded with a MIG welder
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Aluminum is a material that can be effectively welded using a MIG welder, providing strong joints.
Step 20
1.3.5 The tool used to light the oxyacetylene welding flame
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The flint lighter is the tool used to ignite the oxyacetylene welding flame, ensuring precise ignition.
