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AMC520S - AGRICULTURAL MECHANISATION - 2ND OPP - JUNE 2025 |
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t!J
nAmlBIA unlVERSITY
OF SCIEnCE Ano TECHnOLOGY
FACULTY OF HEALTH, NATURAL RESOURCESAND APPLIED SCIENCES
DEPARTMENT OF AGRICULTURAL SCIENCESAND AGRIBUSINESS
QUALIFICATION: BACHELOR OF SCIENCEIN AGRICULTURE
QUALIFICATION CODE: 07BAGA
LEVEL: 7
COURSE CODE: AMC520S
COURSE NAME: AGRICULTURAL MECHANISATION
DATE: JULY 2025
DURATION: 3 HOURS
PAPER: THEORY (PAPER 1)
MARKS: 100
SECOND OPPORTUNITY /SUPPLEMENTARY EXAMINATION QUESTION PAPER
EXAMINER(S) Mr. H. TJIKURUNDA
MODERATOR: Mr. J. AMUTENYA
INSTRUCTIONS
1. Answer ALL the questions.
2. Read all the questions carefully before answering.
3. Number the answers clearly.
THIS QUESTION PAPER CONSISTS OF 7 PAGES (Including this front page)
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SECTION A: TRUE OR FALSEQUESTIONS
QUESTION 1: State whether the following statements are TRUE or FALSE.Write the number of
the question and either True or False next to the number.
1.1 Farmworkers are at a higher risk of hearing loss compared to workers in other
industries.
1.2 Only farmworkers who apply pesticides are at risk of exposure
1.3 Regular lubrication of machine parts can help reduce friction and lower noise
levels.
1.4 In metal arc welding, an electric arc is struck between the parent metal and a
consumable electrode.
1.5 Increasing the pipe diameter by a factor of two doubles the flow rate.
1.6 The alternator on the vehicle changes some of the engine's mechanical energy into
electrical energy to operate the vehicle's electrical devices.
1.7 The heat generated by the electric arc melts the metals to form a continuous solid
mass
1.8 Changes to farming mechanisms have only improved working conditions without
increasing exposure to respiratory hazards.
1.9 Hazard identification is the last step in the risk management process.
1.10 Pesticide exposure can lead to both acute and chronic health issues.
1.11 The goal of hazard identification is to record and document possible hazards that
may be present in their workplace.
1.12 The arc is formed by striking the electrode to the welding machine and then
withdrawing it.
1.13 It is a legal requirement for employers to ensure that workers are safe at the
workplace.
1.14 Solar radiation can be converted directly into electricity by solar cells to produce
renewable energy.
1.15 Compaction of concrete is done by adding more water to ensure that the concrete
is easy to work with.
1.16 One of the ways to treat snakebites is to suck the venom from the wound
1.17 A good maintenance process includes intervening before failure happens.
1.18 Agricultural processes have no production time restrictions or set timelines,
therefore, maintenance is not required.
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1.19 A centrifugal pump is a hydraulic machine that converts mechanical energy into
hydraulic energy by the principle of forced vortex flow.
1.20 Routine maintenance is carried out at regular intervals and includes periodic checks
of relevant areas.
SECTION A: SUBTOTAL [20]
[20 MARKS]
SECTION B: MULTIPLE CHOICE QUESTIONS
QUESTION 2: Choose the correct/appropriate/relevant
question and the letter only).
answer. (Write the number of the
2.1 Which of the following is a recommended method to treat snake bites?
a) Suck the venom from the wound
b) Wipe venom from the wound
c) Apply a tourniquet
d) Apply direct pressure at the site of the bite
2.2 Which of the following is a function of the drive train of the vehicle's system?
a) Leads burnt gas away from the engine.
b) Help steady the vehicle when attempting to brake.
c) Provides structural support and steady the vehicle.
d) Gas inlet into the chamber to save passengers
2.3 Which of the following is relevant/applicable to an electrified fence?
a) Wooden droppers
b) Lightning protector
c) Thermostat
d) Barbed wire
2.4 Which one of the following is not a reason for a good maintenance practice?
a) To reduce maintenance costs and costs due to production loss.
b) To extend the life of the equipment.
c) For effective control of employees.
d) To intervene before breakages happen.
2.5 One of the following is a component of the vehicle's cooling system. Which one?
a) Fuel tank
b) Fanbelt
c) Timing belt
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d) Battery
2.6 One of the disadvantages of an electrical fence is that;
a) It requires low maintenance, provided that the fence is correctly planned
and erected.
b) Its effectiveness is subject to environmental factors, especially plants
growing against it, causing short circuits and eventually providing fuel for
veld fires that will damage the galvanized wire.
c) Anyone can afford it.
d) It can't keep predators out.
2.7 The following is an example of a zoonotic disease that farmers may contract?
a) Feline Immunodeficiency Virus {FIV)
b) Cryptosporidiosis
c) Lymphoma
d) Legionnaires' disease
2.8 The following are worker infection control measures for zoonotic diseases.
Choose the most appropriate one.
a) Isolating diseased animals.
b) Appropriate use of personal protective equipment (e.g., gloves and outer
protection, facial and respiratory protection).
c) Track aggressive animals so that restraints may be used when necessary.
d) Contact a veterinarian to assist with the control
2.9 Which of the following is a component of the drive train?
a) Differential
b) Accelerator pedal
c) Stationery brakes
d) Seatbelt
2.10 One of the following is not a reason for providing/administering first aid.
a) Prevent the condition from worsening.
b) To ensure the recovery of the patient.
c) It is a humanitarian act
d) To preserve life
2.11 What does the acronym ABC in first aid stand for?
a) Airbug, Breathing, Circulation
b) Airways, Breathing, Circulation
c) Airways, Body, Circulation
d) Airways, Breathing, Control
2.12 What is your first reaction at a vehicle accident scene when rendering first aid?
a) Secure the scene
b) Mobilise the resources you need to use.
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2.13
2.14
2.15
2.16
2.17
2.18
c) Control bleeding before moving the patient.
d) Call the ambulance
An advantage of an iron post for fencing is that;
a) It has a longer lifespan
b) It costs less
c) It can easily be rusted
d) It is available almost everywhere
What is the recommended electrode size for a workpiece of 8 mm thickness?
a) 2.5 mm in diameter
b) 8 mm in diameter
c) 4 mm in diameter
d) 5 mm in diameter
What is one of the main complications for humans if bitten by an animal such as
a dog?
a) Contracting anthrax
b) Contracting rabies
c) Trauma
d) Becomes prone to being bitten by dogs all the time.
Some boreholes have a problem of sand entering the borehole from underground
aquifers. Provide one possible solution for this.
a) Matching financial resources to water availability.
b) Fasten a fairly wide diameter pipe underneath the cylinder.
c) Determining how fast water supplies will run out during times of
prolonged dry conditions.
d) Remove the sand from the borehole.
Which one is an advantage of solar energy?
a) Among all the benefits of solar panels, the most important thing is that
solar energy is not a truly renewable energy source; when there is no sun,
there is no energy.
b) It cannot be harnessed in all areas of the world and is not available every
day.
c) It is only applicable in rural areas where there is no proper electricity.
d) We cannot run out of solar energy, unlike some of the other sources of
energy, because the sun will always be available.
Which of the following is a consequence of high welding current?
a) Serves to direct the current and become molten
b) Serves as the filler metal in the bead.
c) A weld that is strong and durable
d) Excessive splattering
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2.19 What is meant by proportioning in concrete work?
a) It means how easy it is to place, handle, compact, and finish the concrete.
b) Measuring and mixing all the ingredients correctly.
c) Keeping concrete continuously damp for a period, to allow it to reach
maximum strength.
d) Removing excess materials from the concrete.
2.20 Which is the appropriate definition of maintenance?
a) It is repairing a machine after it breaks or when it stops working.
b) It is a means of reaching the optimum value for equipment to perform the
functions for which it is designed.
c) Maintenance is caring for a machine after it breaks down or wears out
quickly.
d) Replacing all equipment that is broken.
SECTION B: SUBTOTAL [20]
[20 MARKS]
SECTION C: SHORT ANSWER QUESTIONS
QUESTION 3
3.1. Explain the role of maintenance in agricultural systems of production.
(2)
3.2. Name 4 ways in which workers can participate in preventing and controlling infections at the
workplace.
(4)
3.3. Outline 4 problems or welding defects that can be caused by selecting a low welding current.
(4)
3.4. What is the purpose of the fluxing material on the electrode or welding
rod?
(4)
[14 MARKS]
QUESTION 4
4.1. Briefly explain what needlestick injury is and provide 4 ways in which needlestick injuries can
be prevented.
(5)
4.2. Explain 3 methods by which you can store unused cement to prevent it from being stolen,
moistening, and hardening.
(3)
4.3. What factors will determine the type of driver a farmer can purchase when planning for farm
water supply?
(3)
[11 MARKS]
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QUESTION 5
5.1. Provide the minimum safety standards/regulations to which electrified fencing must adhere.
(5)
5.2. Name the parts that form an electrified fence.
(5)
5.3. Name 2 types of pumps commonly used for farm water provision and indicate the application
of each.
(5)
[15 MARKS]
SECTION C: SUBTOTAL [40]
SECTION D: STRUCTURED/LONG ANSWER QUESTIONS
QUESTION 6
Explain, in your own words, how to erect and install a boundary fence for a livestock farming
operation.
(10)
[10 MARKS]
QUESTION 7
Proper operation of farm vehicles can reduce accidents, injuries and fatalities in agricultural
operations. Elaborate on this statement by providing practical safety tips for farmworkers when
operating vehicles.
(10)
[10 MARKS]
SECTION D: SUBTOTAL [20]
TOTAL: 100
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