Motor Electrical Theory N2 — Document

August 2018 — N2 — Motor Electrical Theory

N2 2018 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 34 items found

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Questions — A Preview of What to Expect in the Document

This section provides a quick preview of questions from the document. It may not display every question or the complete wording of each one. For the full content, including diagrams, tables and other information, view the original PDF above.

Q1— Section header —

1.1Three resistance of 3 respectively are connected in series

1.1.1Make a neat labelled sketch of the circuit using SI symbols. Indicate the given values on the sketch. (4\

1.1.2Calculate the total resistance. (2\

1.1.3Calculate the current flowing when a potential difference of 144 volts is supplied to the current. (2\

1.1.4Calculate the voltage across each resistance. (6\

1.2Define each of the following SI units

1.2.1Coulomb (2\

1.2.2Weber (3\

1.2.3Tesla (3\ [22]22

Q2— Section header —

2.1Name TWO types of magnetos that replace rotating armature magnetos. (2\

2.2Give T HREE main advantages of a flywheel magneto. (3\

2.3Draw a labelled circuit diagram of series wound generator with field rheostat connected in the circuit. (5\

2.4Give FIVE reasons why AC generator gradually replaced DC generators. (5\ [15]15

Q3— Section header —

3.1abel each componen of the unit below by writing only the name of the

3.2

3.3Explain how a field coil balancing test is done (6 [18

Q4— Section header —

4.1

4.2What is the essential element of a semiconductor type regulator? (2\

4.3Give THREE factors that determine the amount of induced voltage. (3\

4.4Compare the variode regulator with other regulators in terms of temperature effect. (4\ [19] 1104061219

Q5— Section header —

5.1Electric starting system s consist of battery, cranking motor with a solenoid sw itch, a starting switch and complementary wires and cables.

5.2Define the term solenoid. (3\

5.3Explain how a field coil is tested for grounded circuit (4\

5.4Give TWO factors that will affect the output voltage of a generator (2\ [13]13

Q6— Section header —

6.1A sulphated lead acid battery will cause s tarting problems in a vehicle. Explain the procedure to test lead

6.2List THREE factors that may lead to a sulphated lead acid battery. (3\

6.3Give any TWO characteristics of a common emitter amplifier. (2\

6.4A transist or may be used as an amplifier. Give THREE types of transistor amplifiers (3\ [13] TOTAL: 10013

Mark Allocation

Total100 marks

Sections22 + 15 + 19 + 13 + 13 = 82 marks

Paper information

TitleDocument

SubjectMotor Electrical Theory

LevelN2

Document typeQuestion paper

Year2018

MonthAugust

Pages6

Downloads2

Examination context

Decade2010s

Years ago8y

SeasonWinter (SH)

Start dayWednesday

Exam periodAugust 2018

Days since exam2,993

About Motor Electrical 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 size222 KB

Pages6

Archived on8 September 2026

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