This page has every Electrotechnology N3 August paper we have, from 2018 to 2021: 3 question papers and 3 memos in 15 PDFs. Files are in Afrikaans. The newest year is first. Each paper shows the first page of questions, its marks and time, and what the questions cover.
Electrotechnology N3 August papers by year
Electrotechnology N3 August 2021 question papers and memos
August 2021
Electrotechnology N3 August 2021 question paper
100 marks · 3 hours · 7 pages · 10 questions
What is in this paper (10 questions)
Q1
1.1 Why should brushes used in DC machines be spring loaded? (2) 10 marks
Q2
2.1 Self-excited generators produce their own exciting currents. 10 marks
Q3
3.1 The speed of a DC motor is inversely proportional to the main magnetic flux. 10 marks
Q4
4.1 The efficiency of a DC motor was determined using the rope brake method. 10 marks
Q5
5.1 The output from an alternator is a sinusoidal wave. 10 marks
Q6
A single-phase load draws 6,75 kW at a power factor of 0,85 lagging from a 220 V, 10 marks
Q7
7.1 Copy the following table into your answer book and then fill in the blanks. 10 marks
Q8
8.1 Autotransformers are used as voltage boosters to correct voltage drops in 10 marks
Q9
9.1 Potential transformers are used to step down high voltages to values that are 10 marks
Q10
10.1 A rectifier circuit is used to convert AC to DC. Make a neat and fully labelled 10 marks
Instructions to candidates Answer all the questions. Read all the questions carefully. Number the answers according to the numbering system used in this question paper. Start each question on a new page. Keep subsections of questions together. Round off all calculations to THREE decimal places. Use the correct symbols and units. All circuit diagrams and vector diagrams must be at least ONE THIRD of a page and fully labelled. Use only a blue or black pen. Write neatly and legibly. (11040343) -3-
Electrotechnology N3 August 2019 question papers and memos
August 2019
Electrotechnology N3 August 2019 question paper
100 marks · 3 hours · 8 pages · 10 questions
What is in this paper (10 questions)
Q1
Give ONE term for each of the following descriptions by choosing a term from the lis t 10 marks
Q2
2.1 Separately excited generators are commonly used in DC motor speed control. 10 marks
Q3
3.1 Indicate whether the following statements are TRUE or FALSE. Choose the 10 marks
Q4
4.1 Certain applications require DC motors to rotate in both directions. 10 marks
Q5
5.1 Alternating quantities such as voltage and current are sinusoidal in nature and 10 marks
Q6
A circuit consists of a 30Ω resistor, a 150 mH inductor and a 20 0µF capacitor, all 10 marks
Q7
A 25 kW, three-phase induction motor is supplied from a 525 V, 50 Hz supply and i t 10 marks
Q8
8.1 The efficiency of a transformer is very high because it has no moving par ts 10 marks
Q9
9.1 Indicating type instruments measure the effective or root mean square values 10 marks
Q10
10.1 Electronic logic gates form the basic building blocks of digital systems. 10 marks
Instructions to candidates Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Keep subsections of questions together. Round off ALL calculations to THREE decimal places. Use the correct symbols and units. ALL circuit diagrams and vector diagrams must be at least one third of a page and must be fully labelled. Start each question on a NEW page. Write neatly and legibly. (11040343) -3-
Electrotechnology N3 August 2018 question papers and memos
August 2018
Electrotechnology N3 August 2018 question paper
100 marks · 3 hours · 7 pages · 10 questions
What is in this paper (10 questions)
Q1
1.1 Explain the term torque. (2) 10 marks
Q2
2.1 State Faraday's law of electromagnetic induction. (3) 10 marks
Q3
3.1 Show by means of fully labelled circuit diagrams TWO methods used to 10 marks
Q4
4.1 Explain each of the following terms: 10 marks
Q5
5.1 Indicating-type instruments measure the effective or root mean square (rms) 10 marks
Q6
6.1 A 3 kW load operating at unity power factor is supplied with 240V, 50Hz. 10 marks
Q7
A series circuit consisting of a 65 Ω resistor, an inductor of 200 mH and a capacitor of 10 marks
Q8
8.1 Name TWO types of iron losses that occur in a transformer. (2) 10 marks
Q9
9.1 The measurement of high voltages and high currents is both dangerous and 10 marks
Q10
10.1 Draw the IEC symbol for an NPN transistor and label the THREE terminals. (4) 10 marks
Instructions to candidates Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Keep subsections of questions together. Round ALL calculations off to THREE decimal places. Use the correct symbols and units. Start each question on a NEW page. ALL circuit diagrams and vector diagrams must be at least one third of a page and must be fully labelled. Write neatly and legibly. (11040343) -3- T560(E)(A6)T
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Questions about these papers
Which years of Electrotechnology N3 August papers are on this page? Papers from 2021, 2019, 2018. The newest year is at the top.
How many marks is the Electrotechnology N3 August paper? The paper is usually out of 100 marks and you get 3 hours to write it.
Are the memos included? Yes. 3 of the 3 papers on this page have their marking memo next to the question paper.
