NSC Agricultural Technology Welding techniques: Various options are provided as

Question

Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1.1 to 1.1.10) in the ANSWER BOOK, e.g., 1.1.1 D.

1.1.1 The ... is used to remove welding spatter from metal.
A pr... punch  
B rasp  
C angle grinder  
D hack saw

1.1.2 The ... is used to remove a bearing from an alternator shaft without damaging the components.
A acetylene flame  
B claw hammer  
C bearing chisel  
D bearing puller

1.1.3 The ideal number of teeth per 25 mm on a hacksaw blade used to cut 20 mm solid aluminium bar:
A 6 teeth per 25 mm  
B 18 teeth per 25 mm  
C 52 teeth per 25 mm  
D 62 teeth per 25 mm

1.1.4 .... is used for the manufacturing of O rings.
A Fibreglass  
B Teflon  
C Perspex  
D Bakelite

1.1.5 This material should NOT be ground with a bench grinder because the heat damages the grinding wheel pores causing the wheel to become overheated:
A Cast iron  
B Mild steel  
C Copper  
D Stainless steel

1.1.6 The use of compressed air in the farm workshop is associated with ...
A soldering  
B MIG welding  
C TIG welding  
D plasma cutting

1.1.7 Incorrect calibration of a diesel pump on a tractor can be identified by ...
A black smoke exiting the exhaust.  
B noisy valves.  
C white smoke exiting the exhaust.  
D the engine that back-fires.

1.1.8 Modern technological systems, such as ..., are used to notify the operator when grain is blocking the system in a combine harvester.
A yield monitors  
B flow sensors  
C neutron probes  
D tensioners

1.1.9 The drain pipe connecting the toilet to the septic tank is made from ...
A copper.  
B PVC.  
C iron.  
D ...

1.1.10 The most suitable all-purpose fire extinguisher for a welding workshop:
A Foam extinguisher  
B Water hose  
C Water extinguisher  
D Dry powder extinguisher.

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 the question numbers (1.2.1 to 1.2.5) in the ANSWER BOOK.

1.2.1 Safety signs attached to an electric fence must be made of plastic with a red background.
1.2.2 A newspaper is the most effective type of communication to inform farm neighbours about an immediate emergency.
1.2.3 A one-way valve is a device that is capable of adjusting the water delivering line in response to current environmental conditions.
1.2.4 Compressed air is used as a hydraulic fluid in a car's bottle lift.
1.2.5 Steel that has a copper coating produces poisonous gases when subjected to welding.

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

1.3.1 Alloy elements used in the manufacturing of stainless steel.
1.3.2 A heat-resistant plastic.
1.3.3 The MIG welding defect that occurs when the gap between the nozzle and the work piece is excessive.
1.3.4 The gas with the highest cutting capacity used for plasma cutting.
1.3.5 A highly flammable gas that is commonly used in the workshop.

Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2018 - Paper 1

Worked Solution & Example Answer:Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2018 - Paper 1

1.1.1 The ... is used to remove welding spatter from metal.

1.1.2 The ... is used to remove a bearing from an alternator shaft without damaging the components.

1.1.3 The ideal number of teeth per 25 mm on a hacksaw blade used to cut 20 mm solid aluminium bar:

1.1.4 .... is used for the manufacturing of O rings.

1.1.5 This material should NOT be ground with a bench grinder because the heat damages the grinding wheel pores causing the wheel to become overheated:

1.1.6 The use of compressed air in the farm workshop is associated with ...

1.1.7 Incorrect calibration of a diesel pump on a tractor can be identified by ...

1.1.8 Modern technological systems, such as ..., are used to notify the operator when grain is blocking the system in a combine harvester.

1.1.9 The drain pipe connecting the toilet to the septic tank is made from ...

1.1.10 The most suitable all-purpose fire extinguisher for a welding workshop:

1.2.1 Safety signs attached to an electric fence must be made of plastic with a red background.

1.2.2 A newspaper is the most effective type of communication to inform farm neighbours about an immediate emergency.

1.2.3 A one-way valve is a device that is capable of adjusting the water delivering line in response to current environmental conditions.

1.2.4 Compressed air is used as a hydraulic fluid in a car's bottle lift.

1.2.5 Steel that has a copper coating produces poisonous gases when subjected to welding.

1.3.1 Alloy elements used in the manufacturing of stainless steel.

1.3.2 A heat-resistant plastic.

1.3.3 The MIG welding defect that occurs when the gap between the nozzle and the work piece is excessive.

1.3.4 The gas with the highest cutting capacity used for plasma cutting.

1.3.5 A highly flammable gas that is commonly used in the workshop.

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