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AMC520S - AGRICULTURAL MECHANISATION - 2ND OPP - JUNE 2024 |
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" nAm I BI A un IVE RSITY
OF SCIEnCE Ano TECHn OLOGY
FACULTYOF HEALTH,NATURAL RESOURCESAND APPLIEDSCIENCES
DEPARTMENT OF AGRICULTURALSCIENCESAND AGRIBUSINESS
QUALIFICATION: BACHELOR OF SCIENCE IN AGRICULTURE
QUALIFICATION CODE: 07BAGA
LEVEL: 7
COURSE CODE: AMC520S
COURSE NAME: AGRICULTURAL MECHANISATION
SESSION: JULY 2024
DURATION: 3 HOURS
PAPER: 2
MARKS: 100
SECOND OPPORTUNITY/SUPPLEMENTARY EXAMINATION QUESTION PAPER
EXAMINER(S) MR HELMUTH TJIKURUNDA
MODERATOR: MR JEREMIA AMUTENYA
INSTRUCTIONS
1. Answer ALL the questions.
2. Write clearly and neatly.
3. Number the answers clearly.
PERMISSIBLEMATERIALS
1. Examination question paper
2. Answering book
THIS QUESTION PAPER CONSISTS OF 4 PAGE (Including this front page)
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SECTION A: DEFINITIONS &TRUE OR FALSEQUESTIONS
QUESTION 1
Providethe correct term for each of the following terms/phrase or word.
[10]
2.1. Determining appropriate ways to eliminate the hazard or control the risk when the hazard
cannot be eliminated.
2.2. A hydraulic machine that works on the principle of forced vortex flow.
2.3. Serves to direct the arc and becoming molten.
2.4. It assists in forming the arc.
2.5. The process of removing air from concrete.
2.6. Are caused by bacteria, protozoa, fungi, viruses, parasites or prions, which are often part of an
animal's natural flora (i.e., microorganisms that live in and on the animal) but can cause disease
in humans.
2.7. When mixed with water, forms a paste, this paste acts like glue and holds or bonds the
aggregates together.
2.8. Non-metallic particles trapped in the weld metal which may reduce the strength of the welded
joint.
2.9. A joint formed by placing two pieces of metal end-to-end and then welding along the joint.
2.10. The practice of keeping in form or shape of equipment, machine system or object in its original
status as much as possible.
QUESTION 2
State whether each of the following statements are true or false. Only write the number of the
question and True or False.
[10]
2.1. Hazard identification process should be done during the design and implementation of a
project/work to avoid injuries in the workplace.
2.2. A snake bite cannot be treated by immobilizing the patient's limb that is affected.
2.3. Removing the needle cap by mouth will avoid needlestick injuries.
2.4. If the current of your welding machine is too high, your work pieces will be properly welded.
2.5. Solar energy makes use of fossil fuels, therefore it is a renewable energy source.
2.6. During the plastic state of concrete, a worker cannot walk over as he/she will sink.
2.7. Checking and topping up fluids ensures the longevity of your vehicle.
2.8. The number of livestock on a farm determines the type of fence to be erected.
2.9. The reciprocating pump makes use of the positive displacement principle to pump water from
a borehole.
2.10. All sources of alternative energy are produced in the same way by connecting turbines to a
shaft connected to a generator to produce electricity.
SUBTOTAL: 20
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SECTIONB: MULTIPLECHOICEQUESTIONS
QUESTION 3
Choosethe correct answer for each of the following statements. Write the number of the question
and the corresponding letter. (Correct answer, example 3.1. a).
[10]
3.1. The following are factors determining the severity of the harm caused by a health hazard on
our bodies, EXCEPTone. Which ONE?
a) Strength, or potency, of the agent.
b) The environmental conditions of the area.
c) How long you are exposed to the agent.
d) Part of your body that is exposed.
3.2. Which ONE is NOT an example of routine maintenance?
a) Coating of battery electrolyte
b) Lubrication
c) Inspection and minor adjustments of pressure flow
d) Keeping an inventory list of equipment.
3.3. Which ONE is NOT a common type of hazard at the workplace?
a) Fire and explosions
b) Transportation and vehicle-related accidents
c) Narrowed spaces
d) Domestic violence
3.4. The following are initial actions you can take in an emergency, EXCEPTone. Which ONE?
a) Inform the family of the casualty immediately.
b) Only move the patient if absolutely necessary
c) Keep the patient informed
d) Use the right lifting methods
3.5. Which ONE is NOT applicable for daily vehicle inspection?
a) Check the tyre pressure in all thetyres visually.
b) Check the radiator's coolant level.
c) Check the spotlights for looseness.
d) Check the level of engine oil.
3.6. Which factor does NOT affect the strength and durability of concrete?
a) Compaction
b) Curing
c) Cost
d) Type of aggregate
3.7. Which ONE is NOT an element of a fence?
a) Topography
b) Strainer assembly at either end
c) Intermediate posts
d) Droppers and wire stretched tight between the strainers
3.8. The following are defects in welding caused by excessive current, EXCEPTone. Which ONE?
a) Overheating of the electrode
b) Lack of penetration
c) Overheating and burning through of the workpiece
d) Excessivesplattering
3.9. The following statements are TRUE/CORRECTfor welds EXCEPTone. Which ONE?
a) It is one of the simplest and most versatile types of weld joint designs.
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b) The joint is formed simply by placing two pieces of metal end-to-end and then welding
along the joint.
c) Weld edge preparation is not required.
d) The surfaces of the workpieces being joined are on the same plane and weld metal
remains within the planes of the surfaces.
3.10. In an emergency, a casualty can stop breathing due to the following reasons, EXCEPTone.
Which ONE?
a) Head injury
b) Drowsiness
c) Suffocation
d) Poisoning
SUBTOTAL: 10
QUESTION 4
Explain, how a new farm fence is erected.
(13)
[13]
QUESTION 5
5.1. Provide the factors that determine the type of pump you can purchase for water provision on
a farm.
(3)
5.2. Name 2 types of pumps commonly used in the provision of farm water.
(2)
5.3. Name three sources of water for agricultural operations.
(3)
[8]
QUESTION 6
6.1. Discuss wind power as a source of alternative energy with regards to how the wind turbines
work to produce electricity.
(3)
6.2. Outline the advantages of wind power. No need to explain.
(7)
[10]
QUESTION 7
7.1. Define arc welding.
(1)
7.2. What are the effects of too low current on welding?
(4)
[S]
QUESTION 8
8.1. Name and explain in detail, the 3 states of concrete. Make use of FULLsentences.
(11)
8.2. Curing of prepared concrete is very important. Give reasons why concrete slabs or platforms
should be cured before any construction commences.
(5)
8.3.Explain how prepared concrete slabs or platforms are cured.
(2)
[18]
QUESTION 9
9.1. Explain what good maintenance practice includes.
(6)
9.2. Differentiate between corrective and preventive maintenance.
(2)
9.3. Briefly, explain the importance of maintenance in agriculture (farming operations both animal
and crop production).
(8)
[16]
TOTAL: 100
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