NSC Agricultural Technology Ferrous metals: 1.1 Various options are provided

Question

1.1 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 amperage of an electric fence may never be higher than … amperes.
A 0,2
B 20
C 0,005
D 0,002

1.1.2 When working with fibreglass, the hardening agent is called the …
A catalyst.
B resin.
C glue.
D epoxy.

1.1.3 Identify ONE of the following qualities that best suits the transmission oil used in a tractor's hydraulic system:
A Volatile
B Compressible
C Expensive
D Remains liquid over a large temperature range

1.1.4 The teeth of this type of gear are angled in both directions and cannot be meshed from the side.
A Spur gear
B Helical gear
C Double helical gear
D Idler gear

1.1.5 Name ONE disadvantage of V-belts:
A Easily slips off pulleys
B Easily joined
C Much more dangerous than flat belts
D Subject to stretching

1.1.6 A … indicates the gas pressure in the cylinders of an oxyacetylene set.
A release valve
B calibrated glass tube with a metal ball inside
C content gauge
D flash-back indicator

1.1.7 … is NOT one of the functions of the GPS in a modern combine harvester.
A Yield monitoring
B Autonomous steering
C Detection of mechanical problems
D Determining the position of the combine harvester

1.1.8 A photovoltaic panel utilises the … in the rays of the sun to generate electrical energy.
A photons
B X-rays
C ultraviolet rays
D heat

1.1.9 An example of fixed expenses on a tractor:
A Fuel
B Labour
C Depreciation
D Repair

1.1.10 A solar geyser system concentrates the heat from the sun on the … to heat up water.
A glass tubes
B lithium cells
C plasma filament
D photon surface

1.2 Change the underlined word(s) in the following 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.

1.2.1 Bronze is a metal alloy made from copper and … iron.

1.2.2 The tyres of a tractor can be inflated with … to positively change the mass displacement of a tractor.

1.2.3 During overhead gas welding, the force of the … helps keep the molten metal in position.

1.2.4 The melting point of … is 327 °C and it is used as a coating in cooking pans.

1.2.5 Chromium is used as an alloy element in stainless steel and it helps to give steel a fair amount of toughness at low temperatures.

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

COLUMN A	COLUMN B
1.3.1 Capital used to pay contractors for work and repairs done on a farm	A moveable capital
1.3.2 Type of capital used to improve kraals on a farm and to sink boreholes	B thermal imaging
1.3.3 Used to determine areas of underground water in a maize field	C micro irrigation
1.3.4 Is used to lock both wheels together as one	D fixed capital
1.3.5 Water is delivered directly to the roots of plants	E differential lock
	F running expenses
	G working capital
	H overhead irrigation

1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2024 - Paper 1

Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2024 - Paper 1

1.1.1 The amperage of an electric fence may never be higher than … amperes.

1.1.2 When working with fibreglass, the hardening agent is called the …

1.1.3 Identify ONE of the following qualities that best suits the transmission oil used in a tractor's hydraulic system:

1.1.4 The teeth of this type of gear are angled in both directions and cannot be meshed from the side.

1.1.5 Name ONE disadvantage of V-belts:

1.1.6 A … indicates the gas pressure in the cylinders of an oxyacetylene set.

1.1.7 … is NOT one of the functions of the GPS in a modern combine harvester.

1.1.8 A photovoltaic panel utilises the … in the rays of the sun to generate electrical energy.

1.1.9 An example of fixed expenses on a tractor:

1.1.10 A solar geyser system concentrates the heat from the sun on the … to heat up water.

1.2.1 Change the underlined word(s): Bronze is a metal alloy made from copper and … iron.

1.2.2 Change the underlined word(s): The tyres of a tractor can be inflated with …

1.2.3 Change the underlined word(s): During overhead gas welding, the force of the … helps keep the molten metal in position.

1.2.4 Change the underlined word(s): The melting point of … is 327 °C and it is used as a coating in cooking pans.

1.2.5 Change the underlined word(s): Chromium is used as an alloy element in stainless steel and it helps to give steel a fair amount of toughness at low temperatures.

1.3.1 Choose a word/term from COLUMN B: Capital used to pay contractors for work and repairs done on a farm

1.3.2 Choose a word/term from COLUMN B: Type of capital used to improve kraals on a farm and to sink boreholes

1.3.3 Choose a word/term from COLUMN B: Used to determine areas of underground water in a maize field

1.3.4 Choose a word/term from COLUMN B: Is used to lock both wheels together as one

1.3.5 Choose a word/term from COLUMN B: Water is delivered directly to the roots of plants

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