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.
The picture below shows a... 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
Name of the components and ONE function of each.
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Answer
Gearbox
Provides rotation to the wheels and also reduce the speed to the wheels.
Electric Motor
Turns the gearbox connected to the wheels.
Water pump/Centrifugal pump
Delivers the water from the source to the centre pivot.
Step 2
How can a drone help a farmer increase crop yield on a piece of irrigation land?
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Answer
By installing a multispectral camera on the drone. The camera can detect moisture variances in soil and generate a geographic map. It can also detect system faults, leaking pipes, or deflated tires, and identify areas 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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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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Answer
Water meter/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.
2. Prevent over irrigation.
3. Prevent under irrigation.
4. Save money.
5. Minimize labor costs.
6. Allow for 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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Heavy solids settle to the bottom of the tank.
2. The lighter solids, fats, and greases will float and form a layer of scum on the surface.
3. The solids that have settled to the bottom are broken down by bacteria and form sludge.
4. The discharge from the septic tank is distributed evenly 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.
2. PVC.
Step 9
Describe the distillation process used to purify battery water.
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Water is boiled until it turns into steam/vapour.
2. The steam/vapour is transferred to a different container via a piping system.
3. Cooled down 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 health.
2. Variable Rate Technology - In field equipment and has the ability to apply varying rates of fertilizers/manure/pesticides/herbicides/irrigation.
