This page has every Communication Electronics N4 April paper we have, from 2016 to 2021: 5 question papers and 4 memos in 9 PDFs. The newest year is first. Each paper shows the first page of questions, its marks and time, and what the questions cover.
Communication Electronics N4 April papers by year
Topics that come up most in Communication Electronics N4 April
Counted from the questions in the papers on this page: how many papers each topic appears in, and its average marks.
Topic Papers Average marks
Communication Systems 3 18 Radio-Wave Propagation 3 15 Demodulation 3 13 Modulation 3 9 Alternating-Current Theory 2 13 Network Theorems 2 11 Attenuators and Filters 2 7 Frequency Response (Filters, Attenuators and Rc Time Constants) 1 20 Alternating-Current Theory (Vectors) 1 16 Direct-Current Theory (Network Theorems) 1 12
Communication Electronics N4 April 2021 question papers and memos
April 2021: Electronics
Communication Electronics N4 April 2021: Electronics question paper
100 marks · 3 hours · 6 pages · 8 questions
What is in this paper (8 questions)
Q1
Indicate whether the following statements are TRUE or FALSE by writing only 'True' or 10 marks
Q2
Network Theorems 2.1 Define each of the following: 11 marks
Q3
Alternating-Current Theory A series circuit consists of a coil with a DC resistance of 5 Ω and an inductance of 10 marks
Q4
Attenuators and Filters 4.1 Make neat sketches of each of the following attenuators: 8 marks
Q5
Modulation 5.1 Name FOUR different modulation types used in communication networks. (4) 10 marks
Q6
Demodulation 6.1 Draw a fully labelled block diagram of an AM receiver. (9) 19 marks
Q7
Communication Systems 7.1 Explain how electromagnetic waves are radiated from an antenna. (2) 18 marks
Q8
Radio-Wave Propagation 8.1 Explain the difference between a directional and an omnidirectional antenna. (2) 14 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. Write neatly and legibly. (8080224) -3-
Communication Electronics N4 April 2020 question papers and memos
April 2020: Electronics
Communication Electronics N4 April 2020: Electronics question paper
100 marks · 3 hours · 7 pages · 9 questions
What is in this paper (9 questions)
Q1
Indicate whether the following statements are TRUE or FALSE by writing only 'True' or 10 marks
Q2
Various options are given as possible answers to the following questions. Choose the 10 marks
Q3
Network Theorems 3.1 Define the following: 10 marks
Q4
Alternating-Current Theory A series circuit consists of a capacitor with a capacitance of 10 nF, a resistor with a 16 marks
Q5
Attenuators and Filters 5.1 Define an attenuator. (2) 5 marks
Q6
Modulation Define the following: 6 marks
Q7
Demodulation 7.1 Draw a fully labelled circuit diagram of an AM full-wave detector. (3) 10 marks
Q8
Communication Systems 8.1 Draw a block diagram of an AM super heterodyne receiver. (6) 15 marks
Q9
Radio-Wave Propagation 9.1 Determine the length of a standard hal-fwave dipole antenna used to receive 18 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 section on a new page. Use only a black or blue pen. Write neatly and legibly. (8080224) -3-
Communication Electronics N4 April 2019 question papers and memos
April 2019: Electronics
Communication Electronics N4 April 2019: Electronics question paper
100 marks · 3 hours · 6 pages · 8 questions
The memo for this paper is not available yet.
What is in this paper (8 questions)
Q1
Indicate whether the following statements are TRUE or FALSE. Choose the answer 10 marks
Q2
2.1 Define each of the following: 10 marks
Q3
A parallel circuit consists of a coil with an internal DC resistance of 10 Ω and an 10 marks
Q4
4.1 Make neat sketches of each of the following attenuators: 10 marks
Q5
Make neat, fully labelled sketches of each of the following: 10 marks
Q6
6.1 Draw a fully labelled block diagram of an AM-transmitter. (5) 20 marks
Q7
7.1 Draw a block diagram of an FM-superheterodyne receiver. (5) 15 marks
Q8
8.1 Determine the length of a standard half-wave dipole antenna used to receive 15 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. Write neatly and legibly. (8080224) -3- T380(E)(M28)T
Communication Electronics N4 April 2018 question papers and memos
April 2018: Electronics
Communication Electronics N4 April 2018: Electronics question paper
100 marks · 3 hours · 5 pages · 7 questions
What is in this paper (7 questions)
Q1
Direct-Current Theory (Network Theorems) 1.1 Define Nortan's theorem. (3) 12 marks
Q2
Alternating-Current Theory (Vectors) 2.1 Refer to the parallel RLC circuit in FIGURE 1 to calculate the following: 16 marks
Q3
Frequency Response (Filters, Attenuators and Rc Time Constants) 3.1 Explain in detail the construction of a composite filter. (4) 20 marks
Q4
Modulation 4.1 Define phase modulation. (2) 10 marks
Q5
Demodulation 5.1 Explain in detail why the full-wave voltage detector provides more efficient 10 marks
Q6
Communication Systems The block diagram in FIGURE 2 shows an FM receiver. 20 marks
Q7
Radio-Wave Propagation Explain the following terms with reference to the propagation of radio waves: 12 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. Write neatly and legibly. (8080224) -3- T380(E)(M27)T
Communication Electronics N4 April 2016 question papers and memos
April 2016: Electronics
Communication Electronics N4 April 2016: Electronics question paper
100 marks · 3 hours · 6 pages · 8 questions
What is in this paper (8 questions)
Q1
Indicate whether the following statements are TRUE or FALSE. Choose the answer 10 marks
Q2
2.1 Define the following: 10 marks
Q3
A series circuit consists of a coil with a DC resistance of 10 W, an inductance of 200 μH 10 marks
Q4
4.1 Define an attenuator. (2) 10 marks
Q5
5.1 Make a neat, fully labelled sketch of a travelling wave tube. (5) 15 marks
Q6
6.1 Draw a block diagram of an AM superheterodyne receiver. (5) 20 marks
Q7
7.1 Draw a block diagram of an FM-transmitter. (5) 10 marks
Q8
8.1 Define the following: 15 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. Write neatly and legibly. (8080224) -3- T300(E)(A8)T
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Questions about these papers
Which years of Communication Electronics N4 April papers are on this page? Papers from 2021, 2020, 2019, 2018, 2016. The newest year is at the top.
How many marks is the Communication Electronics N4 April electronics? Electronics is usually out of 100 marks and you get 3 hours to write it.
Are the memos included? Yes. 4 of the 5 papers on this page have their marking memo next to the question paper.
Which topics come up most in Electronics? Communication systems, radio-wave propagation and demodulation, based on 3 papers on this page.
