Nqf Electrotechnology NCV Level 2 — Document P1
November 2022 — NCV Level 2 — Nqf Electrotechnology
NCV Level 2
2022
NCV Engineering
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Q1— Section header —
1.1Choose the correct word from COLUMN B to complete the statement in COLUMN A. Write only the letter (A E\ next to the question number (1.1.1
1.1.5\n the ANSWER BOOK. COLUMN A COLUMN B
1.1.5... states that the current that flows in a circuit is proportional to the voltage and inversely proportional to the resistance as long as the temperature stays constant and the current of a circuit fined as the quantity of
1.2Define the following terms:
1.2.1Positive ion
1.2.2Doping
1.2.3
1.3
1.3.1
1.3.2The total charge of the circuit (3\
1.4A series circuit consists of a ohm resistor, an inductor of 0,3 henry and a capacitor of 40 microfarads. If the circuit is connected across a 230 V, 50 Hz supply, calculate:
1.4.1The impedance of the circuit
1.4.2The total current of the circuit
1.4.3The phase angle (2\ [20]20
Q2— Section header —
2.1Electrical drawings can represent anything from a simple single line drawing to complex power control circuits. Name the THREE most common types of diagrams encountered in the field. (3\
2.2Draw a fully labelled circuit diagram of a single phase stove subcircuit. Your diagram must include an isolator. (6\
2.3You are required to install a 5 kW, 240 V AC motor. Calculate the current that this motor will draw from the supply if it operates a t a power factor of 0,8 lagging. (2\
2.4Draw the IEC symbols for the following:
2.4.1Relay coil
2.4.2Generator
2.4.3Double pole isolator
2.4.4Two way switch
2.4.5
2.5In South Africa, electrical installations must conform to the South African National Standards Code SANS 10142. Complete the following regulations by writing the missing word next to the letter (a d\ in the ANSWER BOOK
2.5.2
2.6List FIVE variables to be taken into consideration when selecting a cable for a particular application. (5\ [25]25
Q3— Section header —
3.1Study the circuit in FIGURE 1 below and then answer the question. FIGURE 1 The table below contains the material list of components needed to build a stable multivibrator circuit. Copy the
3.2List FIVE tools needed when constructing this stable multivibrator on eroboard. (5\
3.3Draw a labelled block diagram of the ower supply unit (PSU\. (6\
3.4List FOUR common faults in relays. (4\ [25]25
Q4— Section header —
4.1Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only 'True' or 'False' next to the question number (4.1.1
4.1.3\n the ANSWER BOOK.
4.1.1Preventive maintenance procedures are done because of partial equipmen t failure.
4.1.2Predictive maintenance procedures are done to predict the performance of an equipment item.
4.1.3
4.2Refer to the circuit diagram in FIGURE 2 below and then answer the questions. FIGURE 2
4.2.1Is the transformer that is used in the circuit a step up or step
4.2.2What will the secondary voltage of the transformer be if the circuit breaker and S1 are in a closed position? (3\ en-GBL CB F1 S1 S2
4.3Give a brief description of how you will perform the continuity test on a cable. (5\
4.4As an apprentice, your supervisor tasked you to identify possible causes of the fault that was identified in the installation. Name THREE things that can assist you to prioritise possible causes of this
4.5Briefly explain the following troubleshooting techniques
4.5.1Half cut method
4.5.220
Q5— Section header —
5.1Your company manufactures and sells light fittings. The cost to manufacture ONE light is R13,00 The factory manufactures 3 000 light fittings per month. The annual overhead expenses of the company are estimated to be
5.2Employees are compelled to wear, or use prescribed ersonal rotective quipment (PPE\
Topics Identified
1
Forms of Ownership
Mark Allocation
Total100 marks
Sections20 + 25 + 25 + 20 + 10 = 100 marks
Paper information
TitleDocument
SubjectNqf Electrotechnology
LevelNCV Level 2
Document typeQuestion paper
Year2022
MonthNovember
Pages8
Downloads3
Examination context
Decade2020s
Years ago4y
SeasonSpring (SH)
Start dayTuesday
Exam periodNovember 2022
Days since exam1,441
About Nqf 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
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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
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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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