Electrotechnology NCV Level 2 — Document P1
November 2023 — NCV Level 2 — Electrotechnology
NCV Level 2
2023
NCV Engineering
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Q1— Section header —
1.1Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only ' rue' or ' alse' next to the question number (1.1.1
1.1.5\n the ANSWER BOOK.
1.1.1Insulators are materials that allows the movement of electrons from one atom to another . Insulators are also able to carry electricity easily.
1.1.2Electrons have a positive charge wh ereas protons have a negative charge.
1.1.3Resistors connected in parallel in a circuit will decrease the total resistance of circuit.
1.1.4Capacitors connected in series in a circuit will increase the total capacitance of circuit.
1.1.5
1.2Define Ohm s law (3\
1.3Study FIGURE 1 below and calculate the following: FIGURE 1
1.3.1Resistance across the parallel section. (3\
1.3.2Total resistance of the circuit. (2\
1.3.3Voltage drop across the parallel section. (2\
1.3.4Current flowing through R resistor. (2\ = 18
1.4A transformer with 150 turns on the primary winding and 15 turns on the secondary winding draws a current of 0,2 A from a 220 V supply. Calculate the secondary current. (3\ [20]20
Q2— Section header —
2.1Refer to FIGURE 2 below and answer the questions that follow: FIGURE 2
2.1.1Name the type of electrical drawing used in circuit A and B respectively.
2.1.2What will the reading on the mmeter be? Show the reading by means of calculation.
2.1.3
2.2Make a neat, labelled sketch to show how two luminaires are controlled from own switch. (3\
2.3An electric cable has the purpose of transporting electrical energy from one point to another. Name FOUR types of cables normally used in a domestic installation. (4\ E=12 V R= 3
2.4List any FOUR tools you will need to make a married joint (4\
2.5Briefly explain the principle of operation of a load control relay. (3\
2.6List FIVE safety precautions to consider when working with a hacksaw. (5\ [25]25
Q3— Section header —
3.1To work systematically when constructing a circuit or a project, you need to draw up a work plan and compile a materials list. Choose a description from COLUMN B that matches the steps in COLUMN A. Write only the letter (A
3.1.6\in the ANSWER BOOK COLUMN A COLUMN B
3.1.6Step 1 Step 2 Step 3 Step 4 Step 5 Step 6
3.2In the workshop we need tools and equipment to build, repair and test circuits. Briefly describe the function of the following components, tools and equipment:
3.2.1Wire stripper
3.2.2Soldering ron
3.2.3Solder pump
3.2.4Long nose pliers
3.2.5Oscilloscope
3.2.6Multimeter (6\ (12040212\
3.3FIGURE 3 below shows a block diagram of a regulated power supply. You are expected to measure the voltages at points . State the voltage type (AC or DC\ at each point.
3.4State when the following boards are used in electronic circuits:
3.4.1Breadboard
3.4.2Vero board (2\
3.5Complete TABLE 1 below by indicating possible resistance readings that will be obtained when testing a N N transistor with a digital multimeter. Write the correct answer next to
3.5.6\in the ANSWER BOOK. + Connection Connection Resistance results Base Emitter
3.5.1Emitter Base
3.5.2Base Collector
3.5.3Collector Base
3.5.4Emitter Collector
3.5.5Collector Emitter
3.5.6TABLE 1 (6\ [25] A B C D E25
Q4— Section header —
4.1Analyse the circuit in FIGURE 4 below and work out the current for each of the voltages. rite your answer next to the question number (4.1.1
4.1.5the ANSWER SHEET. Voltage V 1 V 2 V 3 V 4 V
4.1.5
4.2Briefly describe a safe method of testing transformers. (5\
4.3Explain how the following two common tests on cables are conducted FIGURE 5
4.3.1Continuity test (3\
4.3.2Insulation resistance test (2\
4.4Explain how the input to output technique works in fault finding. (2\
4.5The last step on the five step approach to fault finding is rectify the fault Explain this step.
Q5— Section header —
5.1FIGURE 5 below shows a distribution board found in a domestic installation. Complete a materials list for installing the distribution board. FIGURE 5 HINT: Use the table below: Description Qty (5\
5.2State the information you will need to collect to estimat your budgeted income. (5\ [10] TOTAL: 10010
Mark Allocation
Total100 marks
Sections20 + 25 + 25 + 20 + 10 = 100 marks
Paper information
TitleDocument
SubjectElectrotechnology
LevelNCV Level 2
Document typeQuestion paper
Year2023
MonthNovember
Pages9
Downloads3
Examination context
Decade2020s
Years ago3y
SeasonSpring (SH)
Start dayWednesday
Exam periodNovember 2023
Days since exam1,074
About Electrotechnology examination preparation
This TVET examination resource can be used as part of a structured revision programme. Past papers are most useful when learners attempt questions independently, work within a realistic time limit, and review their answers afterwards.
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.
understanding question requirements
applying subject knowledge
working under time constraints
checking answers
identifying revision priorities
A practical revision approach
Start by completing the resource without looking at the memorandum. Review incorrect and incomplete answers afterwards and make a short revision list based on the areas that caused difficulty.
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