1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2018 - 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 - 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...
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Answer
The correct method is C: Change the pitch of the blades. This adjustment reduces stress on the rotor by optimizing its orientation relative to wind direction.
Step 2
1.1.2 ... is a semi-conductive material used in the manufacturing of a solar cell.
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Answer
The correct answer is D: Silicon. Silicon is widely used in solar cells due to its semiconducting properties.
Step 3
1.1.3 The function of the inserted gas used during MIG welding is to ...
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Answer
The correct option is B: Shield the welding run from oxygen. This is crucial in preventing oxidation and ensuring a strong weld.
Step 4
1.1.4 The U-shaped pipes of centre-pivot irrigation systems...
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Answer
The correct term is D: Goose necks. These pipes support the sprayers and allow for efficient water distribution.
Step 5
1.1.5 Which ONE of the following processes can NOT be used to join copper pipes?
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Answer
The answer is A: Hard soldering, as it generally requires higher temperatures and is not suitable for copper.
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
The answer is A: Depreciation, since it is an accounting measure, not a direct running cost.
Step 7
1.1.7 ... smoke from an exhaust indicates that water is leaking...
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Answer
The answer is B: Black. Black smoke often indicates fuel issues, whereas blue can indicate oil burning.
Step 8
1.1.8 A function of the differential lock on a tractor is...
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Answer
The answer is C: Prevents one of the wheels from sliding, enhancing traction and stability.
Step 9
1.1.9 A ... IS NOT used when a plough is connected to a tractor.
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Answer
The correct answer is D: Stabiliser chain, as it is typically not necessary when using a plough.
Step 10
1.1.10 Which ONE of the following is NOT harmful to the operator...
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Answer
The answer is A: Inert shielding gas, which does not pose health risks when used correctly.
Step 11
1.2.1 The tension of the baler is...
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Answer
The correct term is: one way valve/non return valve.
Step 12
1.2.2 A generator is used to...
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Answer
The term should be: alternator/invertor.
Step 13
1.2.3 The rotor facilitates the feeding process...
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Answer
The correct answer is: Hopper/inlet trough/Thought/Auger/Conveyor belt.
Step 14
1.2.4 Lubrication for a bearing is added...
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Answer
The answer is: Nipple/Pump/Gun.
Step 15
1.3.1 The most common friction material...
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Answer
The answer is A: Asbestos.
Step 16
1.3.2 A low viscosity fluid...
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Answer
The correct answer is B: Resin.
Step 17
1.3.3 The material suitable for the manufacturing...
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Answer
The answer is H: Bronze.
Step 18
1.3.4 This material is used to make the hull of a ski boat.
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Answer
The answer is C: Polystyrene.
Step 19
1.3.5 A material used in the manufacturing of irrigation sprinker heads.
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