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education.gov.za NSC Examination Agricultural Technology Question Paper : Department of Basic

Organisation : Department of Basic Education
Exam : National Senior Certificate Examinations
Document Type : NSC Sample Question Paper
Subject : Agricultural Technology
Category : Grade 12
Year : 2017
Website : https://www.education.gov.za/2017FebMarchNSCExamPapers.aspx
Download Sample Question Paper :
Memo 1 : https://www.southafricain.com/uploads/10855-Memo.pdf
Paper 1 : https://www.southafricain.com/uploads/10855-Technology.pdf

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Education NSC Agricultural Technology Question Paper

Marks: 200
Time: 3 hours
** This question paper consists of 12 pages.

Related : Department of Basic NSC Examination Visual Arts Question Paper : www.southafricain.com/10958.html

Instructions & Information

1. General Instructions And Information
1.1 This question paper consists of TWO sections, namely SECTION A and SECTION B.
1.2 BOTH sections are COMPULSORY.
1.3 Answer ALL the questions in the ANSWER BOOK.
1.4 Number the answers correctly according to the numbering system used in this question paper.
1.5 You may use a non-programmable calculator.
1.6 Write neatly and legibly.

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2.1 This section consists of THREE questions.
2.2 Follow the instructions when answering the questions.

3.1 This section consists of FIVE questions.
3.2 Start EACH question on a NEW page.

Sample Question

Section A

1.1 Various options are provided as possible answers to the following questions. Write down the question number (1.1.1–1.1.10), choose the answer and make a cross (X) over the letter (A–D) of your choice in the ANSWER BOOK.

Plasma cutting machines may be used to cut … sheets.
A aluminium
B copper
C stainless steel
D brass (2)

1.1.2 A gas mixture used to cut thick steel with the plasma cutting machine, which is preferred because of its ability to produce high temperatures:
A Argon hydrogen
B Oxyacetylene
C Nitrogen oxide
D Carbon dioxide (2)

1.1.3 ONE of the following metals may be arc-welded successfully:
A Zinc
B Brass
C Copper
D Mild steel (2)

1.1.4 The pipe-weld joining method used most commonly when manufacturing a farm gate is the … roll position.
A butt joint
B open butt joint
C spot weld
D overlap T-joint (2)

1.1.5 The function of the gas shield around the welding bead when MIG welding:
A Prevents oxidation
B Cleans the weld bead
C Ensures the correct temperature for welding
D Ensures a faster welding speed

1.2 Change the UNDERLINED word(s) in each of the following statements to make the statements TRUE. Write only the word(s) next to question number (1.2.1–1.2.5) in the ANSWER BOOK, for example 1.2.6 Tractor.

1.2.1 The large overhead water pipe of a centre pivot is manufactured from copper. (2)
1.2.2 Wind power converts the kinetic energy present in wind into chemical energy and then into electrical energy. (2)

1.2.3 Standardisation in agriculture is less time-consuming and more cost-effective than working by hand. (2)
1.2.4 Non-stick pots and pans used for cooking are coated with bakelite. (2)
1.2.5 Bacteria in a septic tank prevent the breakdown of solids into a liquid form. (2)

1.3 Choose a word/term from COLUMN B that matches the description in COLUMN A. Write down only the letter (A–G) next to the question number (1.3.1–1.3.5) in the ANSWER BOOK, for example 1.3.6 H.

1.3.1 Alloy element used in the manufacturing of stainless steel A annealing
1.3.2 The process whereby copper is heated to a light red colour and quenched in water B manganese
1.3.3 This liquid is highly flammable and must be stored safely C ear plugs

1.3.4 The safety device that must be used to prevent hearing loss because of noise pollution, according to safety regulations in the Occupational Health and Safety Act, 1993 (Act 85 of 1993)D acetone
1.3.5 Anti-corrosive substance used as a coating on metals E bakelite F tin

Section B

Start this question on a NEW page.
2.1 When certain elements are added to stainless steel they may cause changes in the properties of the stainless steel.

2.1.1 Name THREE influences of nickel on stainless steel. (3)
2.1.2 Name the final product formed when two or more pure metals are melted together. (1)
2.2 What happens to a metal when it is annealed? (1)

2.3 Give TWO reasons for removing flux residues after soft soldering. (2)
2.4 Give a reason why brass, which has been heated to a red hot temperature, should NOT be cooled in cold water. (1)
2.5 State THREE properties of tin. (3)

2.6 Adhesives are used daily to join materials.
2.6.1 Define the term adhesion. (1)
2.6.2Name TWO important aspects that must be considered when an adhesive is chosen. (2)
2.7 Describe FOUR precautionary measures to consider when working with glass fibre. (4)
2.8 A vesconite bush is removed easily from the shaft. Give TWO reasons to support this statement. (2) G cotton

2.10 The wires of an electric fence must be very strong because of the enormous strain in the wires.
2.10.1 Name the type of wire used for erecting an electric fence. (1)
2.10.2 What is the minimum thickness of the wires for an electric fence? (1)

2.10.3 Name a cost-effective process that may be used to protect the iron components of an electric fence against corrosion. (1)
2.10.4 Name TWO factors which must be taken into consideration when installing a fence energiser. (2) [35]

Start this question on a NEW page.
3.1 A photograph of a wind turbine is shown below. Answer the questions that follow
3.1.1 Name THREE aspects to consider when selecting a wind turbine to generate power for an electric fence on a game farm. (3)
3.1.2 Describe FOUR advantages of using a wind turbine to generate electrical energy. (4)

3.2 Solar energy is one of the greatest sources of alternative energy, but it is also a source that is mostly underutilised.
3.2.1 Name TWO types of energy that are generated directly from solar energy and give an example of a device that can convert this energy effectively. (4)

3.2.2 Name the component that is used to change direct current (DC) generated by photovoltaic cells into alternating current (AC). (1)
3.2.3 What is the most common semiconducting material used to manufacture solar panels? (1)

Start this question on a NEW page.
4.1 MIG welding is easy because it requires less skill than conventional arc welding.
4.1.1 Name THREE settings on the MIG welding machine that should be adjusted before starting a welding project. (3)

4.1.2 You can tell a fair amount about the quality of a MIG welding process by the way it sounds. Describe the correct sound that the MIG welding process should make. (2)
4.1.3 What is wrong with the setting of the MIG welding machine if the welding operator burns holes into the work piece? (1)

Start this question on a NEW page.
5.1 Describe FIVE safety measures applicable when using a push lawn mower.
5.2 A power take-off shaft is shown below. Answer the questions that follow.
5.2.1 Name the device that allows the power take-off shaft to operate at an angle. (1)

5.2.2 Safety screens must always be used when working with a power take-off shaft so that people are not injured when it is being operated. State TWO requirements that these safety screens should comply with. (2)

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