6.1 The pictures below show three components of a centre-pivot irrigation system - NSC Agricultural Technology - Question 6 - 2021 - Paper 1
Question 6
6.1 The pictures below show three components of a centre-pivot irrigation system. Name the different components and give ONE function of each.
6.1.1
6.1.2
6.1.3
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Worked Solution & Example Answer:6.1 The pictures below show three components of a centre-pivot irrigation system - NSC Agricultural Technology - Question 6 - 2021 - Paper 1
Step 1
The pictures below show three components of a centre-pivot irrigation system. Name the different components and give ONE function of each.
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Answer
Gearbox: Provides rotation to the wheels and also reduces their speed.
Electric Motor: Turns the gearbox connected to the wheels.
Water Pump/Centrifugal Pump: Delivers water from the source to the centre pivot.
Step 2
How can a drone help a farmer to increase crop yield on a piece of irrigation land?
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Answer
A drone can help a farmer increase crop yield by:
Installing a multispectral camera to detect moisture variances in soil and generate a geographic map.
Identifying system faults, such as leaking pipes or deflated tires.
Monitoring where plant growth is weak.
Step 3
Name the system that is installed on the drone to pin point exact location.
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GPS (Global Positioning System).
Step 4
Identify THREE types of sensors that provide input data to the irrigation controller of an irrigation system.
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Soil moisture sensor.
Rain sensor.
Humidity sensor.
Step 5
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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Water meter or Flow meter.
Step 6
Why is it advisable for a farmer to consider the automation of an irrigation system?
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To save water.
To prevent over-irrigation.
To reduce labor costs.
To enable distance control and monitoring.
Step 7
Describe the working of a farmhouse septic tank system from the moment that waste has been flushed down the toilet.
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Waste flows through the toilet into the septic tank.
Heavy solids settle to the bottom and form a layer of scum.
Bacteria break down the solids.
The liquid effluent is released to the absorption field.
Step 8
Name TWO common materials used to manufacture rainwater gutters and down pipes found on farm buildings.
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Aluminium.
PVC.
Step 9
Describe the distillation process used to purify battery water.
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Water is boiled until it turns into steam.
The steam/vapour is transferred to a different container via a piping system.
The cooled steam turns back into distilled water.
Step 10
Answer the question below regarding technological systems and the application thereof.
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Geographical Information System can be used to monitor plant growth.
Variable Rate Technology is applied in field equipment and has the capabilities for precision in the application of fertilizers and herbicides.
