Radio And Television Theory N2 — Document

April 2018 — N2 — Radio And Television Theory

N2 2018 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 38 items found 📚 1 topics

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Q1— Section header —

1.10\ the ANSWER BOOK.

1.1The ability of a capacitor to store charge is determined by the (volume/area\ of the plates.

1.2To calculate the instantaneous voltage of a sine wave the (cos/sin\of the is needed

1.3In a parallel resonant circuit the total current will be a (maximum/minimum\

1.4The power gain of a transistor connected in the common emitter mode is (unity/high\

1.5When a carrier frequency is amplitude modulated by an audio signal (2/3\ frequencies are produced.

1.6If a dead stage is detected in the video detector stage the (diode/transistor\ is immediately checked for a faulty condition.

1.7The line oscillator provides (vertical/ horizontal\ scanning of the screen with an electron beam.

1.8The luminance travels (faster/slower\ than the chrominance through luminance circuitry.

1.9

1.1010

Q2— Section header —

2.1The maximum value of the emf (1\

2.2The rms valu e and average value (after full wave rectification\ (4\

2.3The frequency of the supply (3\

2.4The time period (2\ 11040832

2.5The instantaneous value of the emf 12 milliseconds after zero increasing positively (4\

2.6The time that it would take the waveform to reach 55 volts for the first time from zero (6\ [20]20

Q3— Section header —

3.1Give FOUR conditions that exist when a circuit with R, L and C in series, resonates. (4\

3.2capacitor. The supply voltage to this circuit is 100 V. Determine:

3.2.1The resonant frequenc (4\

3.2.2The quality factor (Q\f the coil (2\ [10]10

Q4— Section header —

4.1Give the SEVEN main sub sections of an oscilloscope. (7\

4.2The probes of a cathode ray oscilloscope are classified as being active, passive or current. Briefly describe the active probes

Q5— Section header —

Q6— Section header —

Q7— Section header —

7.1The circle (2\

7.2The black and white castellations around the edge of the pattern (2\

7.3Scanning linearity (2\

7.4Convergence (3\

7.5Contrast (2\

7.6Ghost images (2\

7.7Colour settings (2\ [15]15

Q8— Section header —

Topics Identified

Business Plan

Mark Allocation

Total100 marks

Sections10 + 20 + 10 + 10 + 10 + 15 + 15 + 10 = 100 marks

Paper information

TitleDocument

SubjectRadio And Television Theory

LevelN2

Document typeQuestion paper

Year2018

MonthApril

Pages8

Downloads1

Examination context

Decade2010s

Years ago8y

SeasonAutumn (SH)

Start daySunday

Exam periodApril 2018

Days since exam3,115

About Radio And Television Theory 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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File size630.6 KB

Pages8

Archived on8 September 2026

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