Control Systems N6 — Memo

August 2019 — N6 — Control Systems

N6 2019 Nated Engineering

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Q1— Section header —

1.10(10 [10]10

Q2— Section header —

Q3— Section header —

3.1

3.2(3\ [10]10

Q4— Section header —

4.1.1Gain margin = 11,9 (1\

4.1.2Phase margin = 3 (1\

4.1.3Gain crossover frequency = rad/sec (1\

4.1.4Phase crossover frequency =

31.8rad/sec (1\

4.1.5damped natural resonant frequency = rad/sec (1\

4.1.6Peak frequency response = 26,5 rad/sec (1\

4.1.7Peak magnitude and phase = dB and (2\

4.1.8Closed loop bandwidth = rad/sec (1\

4.2Stable (1\ [10]10

Q5— Section header —

5.1

5.2Open loop poles = 0 ; 2 ; Zero s =

5.4K= 0 ,1,2,3, =0 =1 [10]10

Q6— Section header —

6.1.2( 1

6.2\( +7\( +5\ \( \( \( \(

Q7— Section header —

7.1= 1, ,3 1,

7.2

7.4

7.5Peak time 0, [10]10

Q8— Section header —

8.2Switch closes for sufficient time to allow the thyristor current to fal l to zero allowing it to reve rt to its non conducting state. Switch opens and the current through the motor decreases at such

Q9— Section header —

9.1It is used to move a liquid against the force of gravity from one place to another. (1\

9.2.2.1 Outlet Inlet Vacuum igh pressure (4\ .2.2 Rotary pump (1\

9.3The driving flange of the pu mp rotates the cylinder barrel. The axial reciprocation of the pumping pistons in the cylinder is caused by the shoe retainer, which is sprin g loaded towards the cam plate.

Q10— Section header —

10.1Make two measurements from the display which could be a straight line, an ellipse or a circle. Switch off the time base by fully tur ning the stability control anti

10.3[10] TOTAL: Signal enerator Final control Oscilloscope recorder Feedback10

Mark Allocation

Sections10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 + 10 = 100 marks

Paper information

TitleMemo

SubjectControl Systems

LevelN6

Document typeNated Engineering

Year2019

MonthAugust

Pages10

Downloads5

Examination context

Decade2010s

Years ago7y

SeasonWinter (SH)

Start dayThursday

Exam periodAugust 2019

Days since exam2,626

About Control Systems 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 size834.1 KB

Pages10

Archived on8 September 2026

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