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1.7This question paper consists 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. SECTION B: STRUCTURED LONG QUESTIONS
3.1This section consists of FIVE questions. Start EACH question on a NEW page.
1.1Various options are provided as possible answers to the following questions. Choose the answer and write only the letter next to the question number (1.1.1 to 1.1.10\ in the ANSWER BOOK, e .g. 1.1.11 D.
1.1.1Which ONE of the following is NOT a preventative tion when working with implements hitched to a tractor? Install tractor rollover protection. Make sure that shie
1.1.2
1.1.3
1.1.4
1.1.5Which ONE of the following is NOT recommended when you want to improve the cohesion properties of an adhesive? Apply a thick layer of adhesive if the surface is very porous. Apply a thi layer of adhesive
1.1.6
1.1.7
1.1.8
1.1.9is product of running engines and can be very harmful to people. Carbon monoxide Nitrogen Hydrogen Methane
1.1.10
1.2Change the underlined word(s\ in each of the following statements to make the statements TRUE. Write only the appropriate word(s\ next to the question numbers (1.2.1 to 1.2.5\ in the ANSWER BOOK, e.g. 1.2.6 Tractor.
1.2.1The portable sprinkler irrigation system is ideal for using when irrigating a large circular field of cotton because of its low labour requirements and the ability to irrigate a large area effectively.
1.2.2The slip clutch facilitates the power take off shaft to operate at an angle.
1.2.3The hopper of the hammer mill determines the size of the final grounded product.
1.2.4laser is a modern technological device that farmers use to determine a specific location on the farm.
1.2.5Electroplating is the process where a steel product is covered with a zinc coating. (5 x 2\ (10\
1.3Choose a word/term from COLUMN B that matches a description in COLUMN A. Write only the letter (A \ next to the question numbers (1.3.1 to 1.3.5\ in the ANSWER BOOK, e.g. 1.3.6 K. COLUMN A COLUMN B
1.3.5Material used to manufacture the drawbar pin of a tractor Material that is used to manufacture heavy tractor engine blocks Material that is used to manufacture freeze
2.1he following questions are applicable to different metals that are used on a rm in various manufacturing processes
2.1.1Name a suitable alloy element that can be added to stainless steel to give it a fair amount of toughness at low temperatures. (1\
2.1.2What is the percentage of copper and zinc in brass (2\
2.1.3Explain how the internal stress in brass is relieved without losing its properties. (4\
2.1.4Under which circumstances will you use bronze hammers xplain why this is necessary. (2\
2.1.5Explain why bronze wool is preferred to steel wool for woodworking applications. (1\
2.2Study the picture below a silicon based adhesive that can be used on a farm and answer the questions that follow.
2.2Name TWO properties adhesive
2.2
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2.4Give THREE reasons why Vesconite is the best material for the manufacturing of bushes. The picture below shows a component used in an electric fence. Identify the component shown in the picture above.
Q2โ Section header โ
3.1The picture below shows a wind turbine.
3.1.3Name TWO factors to consider before installing a wind turbine. Tabulate TWO advantages and TWO disadvantages of wind turbines. Can the energy produced from this turbine be used during windless days? Motivate your answer.
3.4Briefly discuss the manufacturing process of biodiesel. Name TWO plants from which ethanol can be made. The solar hot water system shown below is used to heat water without using electricity. Study the picture and answer the questions that follow.
3.4.3Explain what is meant by solar power Describe the working of the solar hot water system shown above. Give TWO reasons why a solar hot water system is regarded as a popular choice to heat water. (2\
Q4โ Section header โ
4.1The picture below shows an earth clamp used on a MIG welding machine.
4.1.1Name the TWO surfaces to which the earth clamp can be attached to complete the welding circuit. (2\
4.1.2Name TWO factors that can cause a lack of contact between the welding clamp and the work piece. (2\
4.1.3Name TWO important factors that should be remembered when welding thinner metals with the MIG welding machine. (2\
4.2Name the following pipe welding positions as shown in pictures and A B (2\
4.3Describe the overhead arc welding position. (4\ +"!#$$%%####"""""""%
4.4The picture below shows the bucket of a front end load used on farm to do soil excavation.
4.4.1Identify the welding process shown by arrow (1\
4.4.2Name THREE steps that must be followed by the welding operator to prepare the welding surface before the welding process starts. (3\
4.5Study the picture below and answer the questions that follow.
4.5.1Name TWO factors that cause metal to distort during the welding process.
4.5.2Name TWO ways of controlling metal distortion caused by the welding heat. (2\ 11
4.6The picture below shows an operator using an oxy acetylene welding set.
4.6.1Identify THREE safety measures that are being ignored by the operator. (3\
4.6.2Describe the possible outcome if the gas cylinders were to topple over. (2\
4.6.3Name TWO types of metal that can be cut with an oxy acetylene welding set. (2\
4.7The metal structure of a centre pivot irrigation system is covered with a zinc coating to prevent corrosion.
4.7.1What is this process called? (1\
4.7.2Why is it recommended to NOT weld directly on the zinc coating? (1\ 12
4.8Study the pictures below of TWO different plasma cutting machines and answer the questions that follow.
4.8.1Identify plasma cutting machines (2\
4.8.2State TWO factors that should be considered when choosing the correct plasma cutting machine. (2\
4.8.3What should be kept in mind when operating a plasma cutting machine in the overhead cutting position? (2\ [35] 1335
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5.1Study the picture of a baling machine below and answer the questions that follow.
5.1.1Name TWO advantages of ing a round er on a farm. (2\
5.1.2List FOUR procedures to follow when a baler is being prepared after being used for a long time
5.1.3me the TWO types of expenses associated with a round baler and give ONE example of EACH (4\
5.1.4State TWO functions of a shear bolt found in the drive system of a baling machine. (2\
5.1.5Name THREE safety measures that should be considered when attaching the drive shaft of baling machine to the power take off shaft of the tractor. (3\ Study the picture of a
5.2
5.3State ONE function of EACH of the following components of a hammer mill (a\ (b\ Hopper
5.5.1The front of the tractor lift up when pulling a plough. (1\
5.5.2The implement works at an incorrect cross angle in relation to the tractor. (1\
5.5.3The rear end of the implement does not penetrate the soil. (1\
5.6Name THREE factors that have an influence on the depth control system of a tractor. (3\ [40] 1640
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6.1The picture below shows an irrigation sprinkler.
6.1.1Give FOUR reasons for ing irrigation sprinkler instead of ood irrigation system to water cro
6.1.2List the FOUR primary parts of sprinkler irrigation system
6.1.3Name THREE types of irrigation systems that use the sprinkler shown in the picture above (3\
6.2he following questions are based on drainage systems used in maize field
6.2.1Give a reason why a farmer sometimes needs to drain maize field (1\
6.2.2Name the FOUR types of drainage systems. 17
6.3Study the picture of a septic tank below and answer the questions that follow
6.3.1What is the function of the eve shown by arrow on the outlet side of the septic tank? (2\
6.3.2Describe the working o a septic tank from the moment waste water enters the tank from the inlet to the moment the treated water exits the outlet
6.4Complete the table below regarding different irrigation systems. Write only the answer next to the questio n numbers ( QUESTIONS
6.4.1to 6.4 .4\. NAME EXPLANATION/FUNCTION/WORKING MATERIAL
6.4.1Sprinkler irrigation consisting of several segments of pipe joined together and supported by trusses, mounted on wheeled towers with sprinkle rs positioned along its length, turning around a common centre
6.4.2Travelling sprinkler gun
6.4.3Polyethylene ubing and steel drum
6.4.4A series of pipes, each with a wheel of about 1,5 m diameter. Sprinklers along its length with an engine installed at the middle of the pipe system for driving the system Coupled aluminium pipes on steel
6.5Name the function of EACH of the following parts of an irrigation system:
6.5.1Sand filter (1\
6.5.2Irrigation timer (1\
6.5.3Neutron moisture probe (1\
6.5.4Solenoid valve (1\
6.5.5One way valve (1\ [30] TOTAL SECTION B: GRAND TOTAL:30