Plant Operation Theory N1 — Document

August 2018 — N1 — Plant Operation Theory

N1 2018 Nated Engineering

↓ Download PDF 📄 227.9 KB

Preparing document

📋 Document Analysis

🎯 100 marks ⏱️ 3h 📄 5 pages 📝 44 items found

See full analysis

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 —

1.1Name FIVE chemical compound with more than two elements (5\

1.2Define the following terms:

1.2.1Chemical bonding

1.2.2Covalent bonding

1.2.3Crystalline

1.2.4Metallic bonds

1.2.5Isotopes (5 2\ (10\

1.3Indicate whether the following statements are TRUE or FALSE. Cho ose the answer and write only 'True' or 'F alse' next to the question number (1.3.1

1.3.5\ the ANSWER BOOK.

1.3.1Groups are columns on the periodic table that contain elements with similar chemical properties.

1.3.2Group ONE elements are called alkaline metals.

1.3.3Group TWO elements are known as alkaline earth metals.

1.3.4Group EIGHT elements are known as halogens.

1.3.520

Q2— Section header —

2.1Discuss and name the properties of concrete pipes and state a common use. (4\

2.2Briefly discuss the advantage and disadvantage of lead pipes and how they are formed (5\

2.3Explain how resistance against rust in carbon steel pipes can be improved (2\ (11040001\ T1290(

2.4State the general function , advantage and/ or disadvantage of the following valves

2.4.1Gate valves/sluice valve

2.4.2Ball valves

2.4.320

Q3— Section header —

3.1Draw a sketch of double action piston pump (7\

3.2Give FIVE main advantages of centrifugal pumps in comparison with suction type pumps (5\

3.3A pump delivers 2000 m of water to a height of 60 meters. The density of water is 487 kg/m . Ignore the friction factor. Calculate the following

3.3.1The amount of work done in mega joule.

3.3.2The power consumption in kilowatt , if the pump run 2 minutes.

3.3.3

3.4What is a centrifugal pump? (2\

3.5Name TWO types of centrifugal pumps (2\ [25]25

Q4— Section header —

4.1State FOUR substance s which cause temporary hardness of water. 4\

4.2Explain the following terms

4.2.1Suspended solid (2\

4.2.2Softening of water (2\

4.2.3Dissolved water (2\ (11040001\ T1290( \(J31\T

4.3Show by means of sketch ed graphs, the changes of the temperature vapour pressure and boiling point. Explain the process which is shown by the graphs. (7\ [17]17

Q5— Section header —

5.1Name FOUR safety precautions a person should take when working in plant operation. (4\

5.2State FOUR types of material which, when burnt, will be classified as a class B fire. (4\

5.3Give FOUR advantages of using aluminium materials in fixed roofs. (4\

5.4Explain with the aid of chemical reaction the difference between a shortage of oxygen and full combustion, during a fire (6\ [18] TOTAL 10018

Mark Allocation

Total100 marks

Sections20 + 20 + 25 + 17 + 18 = 100 marks

Paper information

TitleDocument

SubjectPlant Operation Theory

LevelN1

Document typeQuestion paper

Year2018

MonthAugust

Pages6

Downloads2

Examination context

Decade2010s

Years ago8y

SeasonWinter (SH)

Start dayWednesday

Exam periodAugust 2018

Days since exam2,992

About Plant Operation 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.

File details

File size227.9 KB

Pages6

Archived on8 September 2026

File age45d

ContributorFreeMode

FingerprintBC0C4E27C78B

Questions and learner discussion

No questions or discussions have been posted yet.