The pictures below show three components of a centre-pivot irrigation system - NSC Agricultural Technology - Question 6 - 2021 - Paper 1
Question 6
The pictures below show three components of a centre-pivot irrigation system. Name the different components and give ONE function of each.
1. Gearbox
2. Electric mo... show full transcript
Worked Solution & Example Answer:The pictures below show three components of a centre-pivot irrigation system - NSC Agricultural Technology - Question 6 - 2021 - Paper 1
Step 1
6.1.1 Name of component: Gearbox
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The gearbox in a centre-pivot irrigation system allows for the rotation of the wheels, while also managing the speed at which they turn.
Step 2
6.1.3 Name of component: Electric motor
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The electric motor powers the gearbox, enabling it to function and thus allowing the wheels to move.
Step 3
6.1.5 Name of component: Water pump/Centrifugal pump
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The water pump delivers water from the source to the centre pivot irrigation system, ensuring that crops receive the necessary hydration.
Step 4
6.2.1 How can a drone help a farmer to increase crop yield on a piece of irrigation land?
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A drone can help a farmer increase crop yield through the installation of a multispectral camera. This technology detects moisture variances in the soil and generates geographic maps, identifying areas requiring attention. For example, it can detect system faults or identify weak plant growth.
Step 5
6.2.2 Name the system that is installed on the drone to pin point exact location.
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The GPS (Global Positioning System) is installed on the drone to pinpoint exact locations for agricultural monitoring.
Step 6
6.3 Identify THREE types of sensors that provide input data to the irrigation controller of an irrigation system.
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Three types of sensors are:
Soil moisture sensor
Rain sensor
Humidity sensor
Step 7
6.4 Name a device that can be installed on the water delivery pipe of an irrigation system to measure the exact quantity of water that is delivered to the crop.
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A water meter or flow meter can be installed on the water delivery pipe to measure the exact quantity of water delivered.
Step 8
6.5 Why is it advisable for a farmer to consider the automation of an irrigation system?
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Automating an irrigation system can:
Save water by ensuring optimal usage.
Prevent over or under irrigation.
Reduce labor costs through less manual oversight.
Allow for distance control and monitoring of the system.
Step 9
6.6 Describe the working of a farmhouse septic tank system from the moment that waste has been flushed down the toilet.
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Once waste is flushed down, it travels through the toilet pipe into the septic tank. Heavy solids settle to the bottom, forming sludge, while lighter materials float, creating a layer of scum. Bacteria break down the solids, and the effluent is dispersed into the absorption field for treatment.
Step 10
6.7 Name TWO common materials used to manufacture rainwater gutters and down pipes found on farm buildings.
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Common materials include:
Aluminum
PVC
Step 11
6.8 Describe the distillation process used to purify battery water.
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The distillation process begins by turning water into steam. The steam is then transferred to a different container where it condenses back into liquid water, effectively leaving impurities behind.
Step 12
6.9 Answer the question below regarding technological systems
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6.9.1 Geographic Information System can be used to monitor plant health.
6.9.2 Variable Rate Technology is used in field equipment for the application of fertilizers and pesticides.
