Engineering Science NCV Level 3 — Document
November 2019 — NCV Level 3 — Engineering Science
NCV Level 3
2019
NCV Engineering
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Q1— Section header —
1.10\in the ANSWER BOOK.
1.1Cast iron Tool steel Stainless steel Aluminum
1.4The volume of a round tank can be calculated by the following formula: V =
1.5Welding Bolting Laser cutting Brazing
1.6Bolting Arc welding GMAW welding TIG welding (60310023\
1.7The size of a the type of material. the hardness of the material. the colo
1.11Which drawing of the following indicates insufficient fusion?
1.12a steel brush an angle grinder an oxy
1.131 Measuring unit on the product represents 100 measuring units on the drawing. 1 Measuring unit on the drawing represents 100 measuring units on the product. An incline slope of 1:100.
1.14The purpose of a adiant
1.15examine the crane ropes and slings at the start of a shift. let the load hang uncontrolled. swing load over the heads of workers.
Q2— Section header —
2.9\ in the ANSWER BOOK. Also give ONE explanation for each answer.
2.1During hacksaw work, the blade only cuts during the forward stroke.
2.2When using the rotractor head of the ombination set, the incline of a work piece can be determined in degrees.
2.3Hacksaw work does not classify as a shaping technique.
2.4A welder and his/her assistant must provide their own ersonal rotective quipment during work related periods.
2.5A sand bucket can replace a CO fire extinguisher if there is an electrical fire in the work shop.
2.6Hot cracks due to welding occur after the metal has cooled down.
2.7In commercial applications, it is very important to have ventilation.
2.8For installation purposes, components can be marked with any mark.
2.9
Q3— Section header —
3.1State the TWO commercial oxides/iron ores used to manufacture iron. (2\
3.2State THREE quantities of elements ron absorbs uring the melting process when manufacturing iron (3\
3.3State the use of each of the following metals:
3.3.1White cast iron
3.3.2Brass
3.3.3
3.4Describe how a hammer head is secured to a handle. (2\
3.5Describe the meaning of the code '32T' with regard to hacksaw blades. (1\
3.6List THREE types of cuts found on files. (3\
3.7FIGURE 1 illustrates a certain process performed with a specific hand tool. Describe the process in short. FIGURE 1 (2\
3.8Name the tool and state the function of the tool shown in FIGURE 2 FIGURE 2 (2\ (60310023\
3.9When connecting an electrical plug on a single phase electrical cord, you will find three electrical cores inside the cord. Re draw the following table in your ANSWER BOOK and complete the information needed
3.10The term clearance refers to a certain setting on the guillotine machine regard ing the blades. Explain what is meant and say why it is necess
3.11Name the TWO systems in which o xy acetylene welding can be done (2\
3.12Describe the purpose of the blowpipe that forms part of the oxy acetylene gas torch. (1\
3.13To be able to determine the correct bending allowance on plates, you have to take certain sizes in consideration. State TWO of these sizes to consider when bending a plate. (2\
3.14Describe the purpose of a thermostat with regard to HVAC systems. (2\
3.15Sound or noise levels are measured in decibel units. According to the OH&S ct, a worker must use earmuffs from a certain decibel level to prevent hearing loss. From which decibel level must earmuffs be used in the case of high noise
Q4— Section header —
4.1List FOUR main categories of steel. (4\
4.2Name TWO function
Q4— Section header —
4.3FIGURE 3 indicate the front and left views of an Equal Square to Square pipe connection in first angle orthographic projection. Construct to good proportion by using the correct development method the TRUE SHAPE of the
4.4
4.5Which cutting process makes use of high velocity, pressurized water and mixture of abrasive substance to cut through steel? (1\
4.6What do es the abbreviation MSDS stand for with regard to the safe handling of substances
4.7To obtain the required contour for a welding bead, certain processes can be applied such as machining. This process is indicated by the letter 'M'. Which process is indicated by the letter 'G'? (1\
4.8Why is it necessary to keep gas cylinders cool and not to expose them to any source of heat? (1\
4.9Why must the cylinder valve of a gas cylinder always be kept closed when empty? (1\
4.10Indicate whether the following statement is TRUE or FALSE. rite only 'True' or 'False' next to the question number (4.10\in the ANSWER BOOK. Oxygen cylinders may be stacked horizontally provided that they are firmly
4.11Inspections on cranes include inspections their mechanical parts, wire ropes chain slings and so on
4.12Steel ropes with wire cores have certain characteristics which mak them very useful. Describe the TWO main characteristics of th
4.13When inspecting steel rope, its condition should be recorded in a log book. State TWO points that need to be reported. (2\ [33] TOTAL:33
Topics Identified
2
CircuitsConstruction
Mark Allocation
Total100 marks
Sections15 + 18 + 34 + 33 = 100 marks
Paper information
TitleDocument
SubjectEngineering Science
LevelNCV Level 3
Document typeQuestion paper
Year2019
MonthNovember
Pages8
Downloads2
Examination context
Decade2010s
Years ago7y
SeasonSpring (SH)
Start dayFriday
Exam periodNovember 2019
Days since exam2,535
About Engineering Science examination preparation
Engineering Science combines physics principles with engineering applications. The examination covers mechanics, thermodynamics, electricity, and materials science at the relevant N-level.
How to use this resource for revision
A TVET past examination paper is most useful when it is treated as an active revision exercise. Try the questions yourself before checking the corresponding memorandum. Where you make an error, identify the reason — was it a knowledge gap, a calculation mistake, an interpretation issue, or an examination technique problem?
For stronger examination practice, complete the paper without unnecessary interruptions and keep track of the questions that take the most time. Afterwards, review the memorandum and separate knowledge gaps from mistakes caused by interpretation, calculation, structure, or examination technique.
applying physics principles
selecting appropriate formulae
performing calculations with units
interpreting engineering scenarios
explaining scientific reasoning
A practical revision approach
Create a formula sheet organised by topic. The memorandum rewards correct formula identification, proper substitution, and accurate unit handling — always write the formula before substituting values.
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Archived on8 September 2026
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