Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2018 - Paper 1
Question 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 (1.1.1 to... show full transcript
Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2018 - Paper 1
Step 1
1.1.1 A method to protect the rotor of a wind turbine from mechanical damage during strong winds is to …
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Answer
The most effective method to protect the rotor is to C Change the pitch of the blades, as adjusting the pitch helps to minimize stress on the rotor during strong winds.
Step 2
1.1.2 … is a semi-conductive material used in the manufacturing of a solar cell.
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Answer
D Silicon is the correct semi-conductive material widely used in solar cells for its effectiveness in converting solar energy to electricity.
Step 3
1.1.3 The function of the inserted gas used during MIG welding is to …
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The inserted gas primarily serves to B shield the welding run from oxygen, preventing oxidation and ensuring a cleaner weld.
Step 4
1.1.4 The U-shaped pipes of centre-pivot irrigation systems on which the sprayers hang are generally known as …
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These pipes are commonly referred to as B extensions, allowing for the distribution of water through the irrigation system.
Step 5
1.1.5 Which ONE of the following processes can NOT be used to join copper pipes?
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A Hard soldering is not suitable for joining copper pipes when compared to other methods like soft soldering or MIG welding.
Step 6
1.1.6 Which ONE of the following is NOT considered to be a running cost with regard to tractor expenses?
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Answer
A Depreciation is a non-cash expense and thus not considered a running cost, while labour, repairs, and supervisor expenses are operational costs.
Step 7
1.1.7 … smoke from an exhaust indicates that water is leaking into the combustion chamber of the engine.
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The correct indication is A Blue smoke, which signifies oil burning and points towards potential water leakage.
Step 8
1.1.8 A function of the differential lock on a tractor:
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A Disconnects both wheels in an emergency, allowing for better traction and control during critical situations.
Step 9
1.1.9 A … is NOT used when a plough is connected to a tractor.
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A D stabiliser chain is not typically used for connection, while top link, lifting arm, and universal joints are standard.
Step 10
1.1.10 Which ONE of the following is NOT harmful to the operator when cutting with a plasma cutting apparatus?
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A Inert shielding gas is used to protect the operator, making it the option that is not harmful compared to other listed hazards.
