Electronics NCV Level 2 — Document

February 2018 — NCV Level 2 — Electronics

NCV Level 2 2018 NCV Engineering

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🎯 100 marks ⏱️ 3h 📄 7 pages 📝 41 items found 📚 1 topics

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Q1— Section header —

1.1Various options are given as possible answers to the following questions. Choose the answer and write only the letter (A D\ next to the question number (1.1.1

1.1\n the ANSWER BOOK.

1.1.1Which ONE of the following is NOT a characteristic of magnetic line of flux

1.1.2Materials that have high resistance and stop the flow of current

1.1.3This is used as a voltage regulator PN junction diode Zener diode

1.1.4When , the power should be turned off and the ohmmeter should be connected across the component

1.1.5Which ONE of the following is NOT one of the basic components of PLC?

1.2Choose a term from COLUMN B that matches a description in COLUMN A. Write only the letter (A \next to the question number (1.2.1 1. 2.

1.2.5It is used in tuning circuits Energy that cannot be replaced once it has been used Current is directly proportional to voltage and inversely proportional to resistance Output is logic zero

1.3Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only true or false

1.3\ the ANSWER BOOK.

1.3.1A m ultimeter is connected in series with the load when measuring voltage across the load

1.3Tinning is another word for rusting, caused by the reaction of water and oxygen on a metal

1.3An i nvertor or gate is the only logic gate that takes one input

1.3Push to make buttons is one of the components of PLC.

1.3

1.4Complete the following sentences by writing down only the missing word or words next to the question number (1.4.1

1.4.5\the ANSWER BOOK.

1.4.1The output of

1.4.2transmits sound by changing the frequency of the radio wave. (10041012\ NC 102 (E\

1.4.3signal.

1.4refers to cleaning the work area after you have finished your ta ks and cleaning your tools and equipmen t.

1.4

Q2— Section header —

2.1List FIVE characteristics of magnetic lines of flux 2.

2.3.4. Write only the answer next to the question number (2.3.1

2.3.4in the ANSWER BOOK. NAME OF THE IODE IEC SYMBOL MODE OF OPERATION APPLICATION

2.3.2Voltage egulation

2.3.3Reverse bias

2.3.4(4\ Draw a basic power supply circuit that has the following: Step down transformer, bridge rectifier and load (4\

Q3— Section header —

3.1Electrical shock can lead to death or serious injury xplain what can cause electrical shock. (5 3. Breakages and excessive

Q4— Section header —

4.1Convert the following decimal numbers to binary:

4.1.123 10

4.1.2

4.2Convert the following numbers to their binary equivalent number and complete the calculation in binary number systems: 4. 23 10

2.2

Q4— Section header —

Q5— Section header —

Topics Identified

Business Plan

Mark Allocation

Total100 marks

Sections20 + 30 + 20 + 18 + 12 = 100 marks

Paper information

TitleDocument

SubjectElectronics

LevelNCV Level 2

Document typeQuestion paper

Year2018

MonthFebruary

Pages7

Downloads3

Examination context

Decade2010s

Years ago8y

SeasonSummer (SH)

Start dayThursday

Exam periodFebruary 2018

Days since exam3,174

About Electronics 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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