Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2017 - 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 number (1.1.1–1.1... show full transcript
Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2017 - Paper 1
Step 1
1.1.1 The best type of isolation material that is used to isolate an electric fence line from the supporting posts is …
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Answer
The optimal isolation material for an electric fence is C. ceramic, as it effectively prevents electrical conductivity.
Step 2
1.1.2 There is a constant change in the angle between the welding rod and the work piece during this welding process:
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B. Overhead welding is characterized by the angle variation between the welding rod and the workpiece.
Step 3
1.1.3 The gas that must be removed when doing metal inert-gas (MIG) welding because it makes welding difficult:
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During MIG welding, B. Oxygen must be minimized to prevent contamination and ensure a proper weld.
Step 4
1.1.4 Timing of the ram baler means the …
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Timing refers to the A. exact moment when the needles lift the binding rope to encapsulate the hay.
Step 5
1.1.5 The main function of the shear bolt is to act as a … mechanism.
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The shear bolt primarily functions as a B. safety mechanism to prevent damage to equipment.
Step 6
1.1.6 The three-point mechanism was designed by …
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D. Harry Ferguson was instrumental in the design of the three-point linkage system.
Step 7
1.1.7 Black smoke from the exhaust of a tractor indicates:
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Black smoke can indicate A. a too rich diesel mixture, leading to incomplete combustion.
Step 8
1.1.8 Stainless steel is a combination of the following metals:
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Stainless steel typically comprises C. Steel, chromium, magnesium and nickel, which enhance its resistance to corrosion.
Step 9
1.1.9 The synthetic material with the best heat resistance ability:
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A. Bakelite is well-known for its heat resistance properties.
Step 10
1.1.10 Vibration in the hammer mill can be reduced by …
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Vibration can be minimized by B. adapting the hammer mill properly to ensure balance.
Step 11
1.2.1 Cast iron must be cooled to prevent cracking of the joint after welding.
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Answer
The correct word is heated to allow for proper fusion during welding.
Step 12
1.2.2 Deep holes are drilled into the earth until a gas source for harnessing geothermal energy is found.
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The correct term is heat or steam, as these sources are utilized in geothermal energy.
Step 13
1.2.3 The alternator converts direct current into alternating current.
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The accurate term is inverter, which serves this purpose.
Step 14
1.2.4 Implements, equipment and machinery are examples of fixed capital.
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This should be movable, as it defines capital that can change location.
Step 15
1.2.5 A bearing is a machine component that creates friction between the moving component and the shaft.
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The appropriate term is reduces friction to improve machinery efficiency.
Step 16
1.3.1 A drive system that draws tighter round the pulley when the tension on it increases
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Answer
The corresponding term is H. V-belt.
Step 17
1.3.2 The drive method that has the ability to drive a machine over a long distance
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G. Chain is the appropriate term.
Step 18
1.3.3 The pneumatic tool that is used in a workshop to fasten nuts and bolts
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F. Air pressure wrench refers to the tool in question.
Step 19
1.3.4 The device with the ability to control the fertilizer application rate on a planter
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A. Variable-rate technology (VRT) is what enables such control.
Step 20
1.3.5 The source from which the smart controller of a centre-pivot irrigation system receives A.
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D. Internet refers to the necessary data resource.
