Agricultural Technology Paper 1 (English)

November 2020 — Grade 12 / Matric — Agricultural Technology

Past Paper 2020 Grade 12 English

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🎯 200 marks ⏱️ 3h 📄 16 pages 📝 76 items found 📚 2 topics

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1.6This question paper consi sts of TWO sections, namely SECTION A and SECTION B. BOTH sections are COMPULSORY. Answer ALL the questions in the ANSWER BOOK. Number the answers correctly according to the numbering system

2.2This section consists of THREE questions Follow the instructions when answering the questions 3. SECTION B: STRUCTURED LONG QUESTIONS

3.1This section consist s of FIVE questions

3.2Start EACH question on a NEW page Agricultural Technology DBE/ November 2020 SC /NSC

1.1Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A D\ next t o the question number (1.1.1 to

1.1.10\the ANSWER BOOK, e.g.

1.1.11D.

1.1.1Aluminium is preferred for the manufacturing of fizzy drink cans allows air to pass through. is resistant to acids.

1.1.2All workshops must be equipped with fire extinguisher Occupational Health and Safety Act, 1993

1.1.3Which ONE of the follo wing is NOT an aim of standardis ing farm implements

1.1.4type of power take off (PTO\ enables the operator to stop the forward movement of the tractor without stopping the PTO

1.1.5Which ONE of the following is NOT allowed when using a tractor on the farm Install a roll bar on the tractor.

1.1.6shortening the exhaust pipe. installing a muffler in the exhaust system. reducing the size of the silencer box. switching it off du ring thunderstorms.

1.1.7The mechanism on a tractor that ensures that the plough work at a constant depth:

1.1.8two wheels on an axle. pulling power thrust torque

1.1.9shafts which allows the shafts to work at different angles. ressure plate

1.1.10Evenly d istributes the outflow from the septic tank to the drainage field:

1.2Change the UNDERLINED word (s\ in each of th e following statements to make them TRUE. Write only the word next to the question number

1.2.5\the ANSWER BOOK, e.g.

1.2.6Tractor.

1.2.4Nickel changes the band structur e of stainless steel and cause reduction in striking strength at the same time Bronze is an alloy consisting primarily of

1.2.5The gas welding machine is used by robots in the automotive manufacturing industry to weld the body panels of vehicles (5 x 2\ (10\

1.3Choose a word/term from COLUMN B that matches the description in COLUMN A. Write only the letter (A H\ next to the question number (1.3.1 to

1.3.5\the ANSWER BOOK, e.g.

1.3.6OL OL

1.3.5Separate the ground material from the air in a hammer mill Separate the chaff and the maize kernels in the combine harve

2.1The diagram below shows an electrical cable with insulation and copper conductors

2.1.2Explain why copper is suitable for the manufacturing of electrical cables. Discuss THREE safety requirements that must be considered when installing the electric cables and leads of electric fences. (2\

2.1.3Lightn ing that strikes the electric fence line can seriously damage the energiser. Draw a labelled sketch of a lightning arrestor installed on an electric fence. Marks will be allocated for Ne

2.2State THREE influences of chromium on stainless steel. (3\

2.3The picture below shows Teflon components.

2.3.2List FOUR chemical substances that have no effect on Teflon coated surfaces. Name TWO co mponents that can be manufactured from Teflon. (4\ (2\ Agricultural Technology

2.6The sales of a local parts manufacturer dropped because many of the customers preferred buy ing Vesconite bushes to steel bushes. Explain to the owner why it would be more prof

2.7The picture below shows a typical cer amic insulator used in electric fence installations.

2.7.2Name TWO materials that can be used as insulator between the wire an d the steel post of an electric fence. The inscription on electric fencing warning boards shall be in

2.8Insulation material used in the roofs of buildings must adhere to certain safety requirements . Discuss FOUR of these safety requirements (4\ [35] Agricultural Technology35

3.1The photograph below shows wind turbine List the FOUR main parts of wind turbine.

3.2State THREE factors that determine the efficiency of a electrical solar panel. (3\

3.3Geothermal energy is the heat energy within the E arth, often manifested in geysers, hot springs as well as volcanoes . I t can therefore be very useful in generating electricity.

3.3.2Briefly describe the procedure that must be followed to harness geothermal energy and transform it into electricity. State TWO main problems associated with geothe rmal energy. (3\ (2\

3.4Biofuel is any plant or animal matter that can be used as a fuel. State FOUR disadvantages of this type of fuel. (4\

3.5The picture below shows a solar geyser. State FOUR advantages of the solar geyser over an ordinary electrical geyser. (4\

4.1The picture below shows a MIG welding torch

4.1.4Identify and Explain the function of n the

4.2The diagram below shows two metal pieces that must be welded together.

4.2.2Briefly explain how a farmer should perform a vertical butt weld joint on the two pieces of metal shown above. Name TWO types of welding runs or patterns that a farmer can use for welding. (5\ (2

4.3

4.3.2Use the information above to determine the volume of the hole minus the pole. Suppose that the contractor wants to order premix concrete to secure the four corner posts. Calculate the volume of the concrete

4.4The immense heat created by the welding arc can cause metal par ts to distort in various directions.

4.4.2Identify the type of shrinking that occurs at arrow Name TWO ways to control the distortion that is created by the heat of welding runs. (1\ (2\

4.5The picture below shows the gas regulator of an oxyacetylene apparatus.

4.5.2State the function of the two gauges and

4.6The p icture below shows a plasma cutting torch. .6.1

4.6.2What type of metal would an operator be cut ting if xygen is being

4.6.3Name the material that is used to manufacture the standard plasma cutting electrode (1\ [35]35

Q5— Section header —

5.2The pictures below show two types of baling machines.

5.2.1Redraw the table below in the ANSWER BOOK. Complete the table by c ompar ing the two baling machines under the given headings. BAL

5.2.3How is bale density changed in BAL ING MACHINE Discuss the function of the slip clutch itted between the PTO shaft

5.3

5.4Discuss FIVE major problems that can occu r during the harvesting of wheat when using the machine shown below. (5\

5.5he picture below shows a double acti ng hydraulic cylinder

5.5.2Briefly describe how the double acti ng hydraulic cylinder works. hich side of the double acti

5.6The picture below shows a tractor pulling a plough.

5.6.2Describe THREE ways to positively change a tractor s mass disp lacement. What will happen if the top link between the tractor and the plough is removed?

5.7tudy the pictures of the two tractors below carefully

5.7.2Choose the tractor or which

5.7.3Why i s the exhaust pipe of the tractor longer than the air intake pipe? (1\ [40]40

6.1The picture below shows a centre pivot irrigation system

6.1.4The irrigation system above requires force to drive the wheels. Name TWO of these drive methods. Name a method to protect the metal parts of the irrigation system against corrosion. Give a reason why

6.3Give THREE reasons for the use of water scheduling. Name TWO types of equipment that can be used to measure crop evapotranspiration effectively (3\ (2\

6.4The diagram below shows a waste water management system.

6.4.3Identify and

6.5Identify the water drainage system shown below. (1\

6.7Briefly explain how water is purified by reverse osmosis. Name TWO communication systems that can be used to monitor the grazing patterns of live stock. (3\ (2\

6.8Rearrange the following steps in the integration of data by a eographic al nformation ystem in the correct order: The yield data from the monitor is recorded and stored

Topics Identified

Plant ProductionAgricultural Management

Mark Allocation

Total160 marks

Sections35 + 20 + 35 + 40 + 30 = 160 marks

Paper information

SubjectAgricultural Technology

Year2020

SessionNovember

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages16

Downloads4

Examination context

Decade2020s

Years ago6y

SeasonSpring (SH)

Start dayThursday

Exam periodNovember 2020

Days since exam2,179

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Corresponding marking memorandum

Marking memorandum available

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