NSC Agricultural Technology Harvesting or processing machines/equipment: 1.1 Various options are provide

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  A part where lubricants are applied to a bearing preventing it from seizing on the shaft:
A. Air valve
B. Nozzle
C. Grease nipple
D. Fuel injector

1.1.2  Electricity, heat and noise are examples of ... hazards.
A. chemical
B. ergonomic
C. biological
D. physical

1.1.3  ... is not sold as a stand-alone motor fuel, although in its pure form it is commonly used as racing fuel.
A. Ethanol
B. Methanol
C. Natural gas
D. Methane gas

1.1.4  A travelling sprinkler gun uses a ..., pipe that winds around a steel drum while the sprinkler travels across a field to water the crop.
A. copper
B. steel
C. polyethylene
D. stainless steel

1.1.5  ... irrigation applies water directly to the roots of a plant.
A. Drip
B. Centre-pivot
C. Mist
D. Travelling sprinkler gun

1.1.6  Farm implements and tractor spares must comply with certain requirements, e.g. interchangeability. This is known as ...
A. mechanisation.
B. reliability.
C. control mechanisms.
D. standardisation.

1.1.7  A ... water purification system can be installed on the water delivery system of a farmhouse to remove impurities from borehole water.
A. reverse osmosis
B. faucet
C. jug
D. ultraviolet

1.1.8  Round bales weigh between ...
A. 1 000 kg and 3 500 kg.
B. 1 500 kg and 4 000 kg.
C. 20 kg and 50 kg.
D. 200 kg and 1 500 kg.

1.1.9  A ... separates the grounded material effectively from the air in the hammer mill.
A. fan
B. screen
C. cyclone
D. hopper

1.1.10  Which ONE of the following CANNOT cause a power take-off shaft to fail when providing drive to a baler?
A. A work angle less than 20 degrees
B. Activation of the limited slip clutch
C. Unlubricated universal joints
D. Excessive vibration

1.2  Change the UNDERLINED word in each of the following statements to make them TRUE. Write only the word(s) next to the question numbers (1.2.1 to 1.2.5) in the ANSWER BOOK, e.g. 1.2.1  Tractor.

1.2.1  A speedometer is installed on a harvester to measure the quantity of the harvested crop. (2)

1.2.2  Manganese is the only alloy element that does not attribute to the corrosive resistant property of stainless steel. (2)

1.2.3  A system of pulleys, belts and chains keeps the weight of the cylindrical bale constant while it is turning. (2)

1.2.4  Compressed air is used as a hydraulic fluid in the bottle jack of a car. (2)

1.2.5  Oxygen is a poisonous gas released by a motor vehicle. (2)

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

1.3.1  An instrument used to measure the rate of evapotranspiration in a crop
A. feel method

1.3.2  A method used to measure the moisture content of soil
B. evaporation pan

1.3.3  A mechanical connection that allows two connected shafts to rotate at an angle
C. mechanisation

1.3.4  Prefers technological advancement while making use of animal-drawn implements
D. differential lock

1.3.5  Is used to drive system of a vehicle to the drive of other machines
E. rain meter

F. ship clip

TOTAL SECTION A: 40

1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2021 - Paper 1

Worked Solution & Example Answer:1.1 Various options are provided as possible answers to the following questions - NSC Agricultural Technology - Question 1 - 2021 - Paper 1

1.1.1 A part where lubricants are applied to a bearing preventing it from seizing on the shaft:

1.1.2 Electricity, heat and noise are examples of ... hazards.

1.1.3 ... is not sold as a stand-alone motor fuel, although in its pure form it is commonly used as racing fuel.

1.1.4 A travelling sprinkler gun uses a ..., pipe that winds around a steel drum while the sprinkler travels across a field to water the crop.

1.1.5 ... irrigation applies water directly to the roots of a plant.

1.1.6 Farm implements and tractor spares must comply with certain requirements, e.g. interchangeability. This is known as ...

1.1.7 A ... water purification system can be installed on the water delivery system of a farmhouse to remove impurities from borehole water.

1.1.8 Round bales weigh between ...

1.1.9 A ... separates the grounded material effectively from the air in the hammer mill.

1.1.10 Which ONE of the following CANNOT cause a power take-off shaft to fail when providing drive to a baler?

1.2.1 A speedometer is installed on a harvester to measure the quantity of the harvested crop.

1.2.2 Manganese is the only alloy element that does not attribute to the corrosive resistant property of stainless steel.

1.2.3 A system of pulleys, belts and chains keeps the weight of the cylindrical bale constant while it is turning.

1.2.4 Compressed air is used as a hydraulic fluid in the bottle jack of a car.

1.2.5 Oxygen is a poisonous gas released by a motor vehicle.

1.3.1 An instrument used to measure the rate of evapotranspiration in a crop

1.3.2 A method used to measure the moisture content of soil

1.3.3 A mechanical connection that allows two connected shafts to rotate at an angle

1.3.4 Prefers technological advancement while making use of animal-drawn implements

1.3.5 Is used to drive system of a vehicle to the drive of other machines

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