Electrotechnology NCV Level 2 — Document
February 2018 — NCV Level 2 — Electrotechnology
NCV Level 2
2018
NCV Engineering
Preparing document
📋 Document Analysis
See full analysis
Questions — A Preview of What to Expect in the Document
57
This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.
Q1— Section header —
1.1FIGURE 1 shows four inc andescen t lamps with different filament resistance va lues connected to a 12
1.1.1Refer to the way in which ALL the lamps are connected to each other and i dentify the type of c ircuit connection. (1\
1.1.2Calculate the total resistance of the circuit. (6\
1.1.3Calculate the total current flowing through the circuit. (2\
1.1.4Calculate the total power drawn by the circuit. (2\
1.2Conductors come in diff erent shapes and sizes and are made from different materials. State FOUR factors that influence the resistance of a conductor. (4\
1.3A transformer is a device that transfers electrical energy from one circuit to another by electromagnetic induction Name THREE parts that make up a basic transformer. (3\
1.4Give TWO characteristics of a relay. (2\ [20] (12040212\ NC10020
2.1Match the light circuit in COLUMN B to the room or rooms in COLUMN A. Write only the lette r (A D\ next to question nu
2.1.4\in the ANSWER BOOK. COLUMN COLUMN
2.1.4(4 1\ (4\ af-ZAS
2.2Refer to FIGURE 2 below of a geyser conne cted to a main supply and answer th e questions. FIGURE 2 Redraw FIGURE 2
2.3When an electrician is wiring a dom estic installation, the wi ring c ode SANS 10142 must always be adhered to. Complete the following sentence by writing down
2.3.4\ the ANSWER BOOK. Any point of a distribution board that has to be reached during normal operation shall not exceed the height of
2.3.1level. However, the distribution board may be mounted higher if it can be disconnec ted from the supply by a switch di sconnector that is less than
2.3.2housed in an enclosure and direct access cannot be obtained by an infant, no part of an indoor distribution board shall be less th an
2.3.3floor level and no part of an outdoor distribution board shall be less than
2.3.4
2.4An electrician has been asked to install an extra socket outlet 1 m away from an existing socket outlet in the staff k itchen. The PVC conduit and PVC
2.4.1Explain the term chasing when installing conduit. (3\
2.4.2Explain h ow the electrician will connect the new socket outlet to the existing socket outlet. NOTE: The explanation must include conductor colours, cross sectional area and
2.5In a distribution board there are two types of bars. One is called an earth bar. What is the second type called? (1\
2.6You have been asked to connect a 1, 5 kW floodlight to a 220 VAC supply and have been given a 5 A switch to control the floodlight.
2.6.1Calculate the current that will be drawn b y the floodlight. (2\
2.6.2Explain whether it is safe to use 5 A switch to control the floodlight
Q2— Section header —
Q3— Section header —
3.1Refer to FIGURE 3 below and answer the questions. regulated power supply FIGURE 3
3.1.1Name the type of transformer used and include values. (2\
3.1.2Explain the importance of the 25 V ma rking on the capacitor. (2\
3.1.3In which type of configuration are the diodes connected? (1\
3.1.4Identify the component marked 1N5436 9, 1 V. (1\
3.1.5Explain w hat an electrician means when he /she says component 1N5436 9, 1 V is connec ted in the reverse bias configuration.
3.1.6Identify the component that gives off a red light. (1\
3.1.7with the component that gives off a red light. (3\ Red 1N5436 9, 1 V 1N4007 1N4007
3.2Tools u sed to work on printed circuit boards are specialised and generally small. Complete the table below by writing only the
3.2.6in the AN SWER BOOK. TYPE OF TOOL NAME OF THE TOOL EXPLAIN THE USAGE OF THE TOOL
3.2.6
3.3Resistors can fail due to exceeding its predicted operating life, mechanical strength and vibration which can lead to gradual failure. Identify THREE ways in which
3.4Refer to FIGURE 4 below and answer the questions. FIGURE 4
3.4.1dentify the type of transistor. (1\
3.4.2Explain how the collector, base and emitter must be biased to allow the transistor to switch on. (3\ [25]25
Q4— Section header —
4.1Study the multimeter connections in FIGURE below and ans wer the questions. FIGURE 5
4.1.1What will the voltage reading on multimeter A be if the switch is open?
4.1.2What will t he voltage reading on multimeter B be if the switch is open? (2 2\ (4\ 12V:7AH
4.2You suspect that the switch is not operating correctly. Study the mult imeter connections in FIGURE 6 below and explain in detail what you will do to test the switch for operation.
4.3Study the mult imeter connections in FIGURE 7 below and answer the questions FIGURE 7
4.3.1What is the voltage reading on multimeter A when the circuit is ope n? 12V:7AH 12V:7AH ut
4.3.2What is the resistance reading on multimeter A when the switch is open? (2 2\ (4\
4.4An electrician has been asked what possible faults could cause bedside lamp not to work. here is
4.4.1Identify TWO fau lts that can occur at the three pin plug of the supply cord. (2\
4.4.2Identif y ONE fault that can occur in the cord from the three pin plug to the switch (1\
4.4.3Identify TWO faults that can occur at the switch. (2\
4.4.4Identify TWO fault s that can occur in the lamp holder. (2\ [20]20
Q5— Section header —
Topics Identified
3
Forms of OwnershipBusiness FunctionsBusiness Plan
Mark Allocation
Total100 marks
Sections20 + 25 + 25 + 20 + 10 = 100 marks
Paper information
TitleDocument
SubjectElectrotechnology
LevelNCV Level 2
Document typeQuestion paper
Year2018
MonthFebruary
Pages11
Downloads4
Examination context
Decade2010s
Years ago8y
SeasonSummer (SH)
Start dayThursday
Exam periodFebruary 2018
Days since exam3,172
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.
File details
File size399.8 KB
Pages11
Archived on8 September 2026
File age45d
ContributorFreeMode
Fingerprint5EECA23B5004
Questions and learner discussion
Log in to ask a question or leave a review.
No questions or discussions have been posted yet.