Plant Operation Theory N2 — Document

August 2018 — N2 — Plant Operation Theory

N2 2018 Nated Engineering

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🎯 100 marks ⏱️ 3h 📄 5 pages 📝 41 items found

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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 —

1.1Choose an item from COLUMN B that matches a word/term in COLUMN A. Write only the letter (A F\ next to the question number (1.1.1

1.1.5\in the ANSWER BOOK. COLUMN COLUMN

1.1.5Metalloid Iron Liquid Calcium Noble gas

1.2Make a s ketch of the complete structure of an a luminium atom, showing the number of orbitals, their shapes and the number of electrons. Also give the electron configuration

1.3Give the IUPAC name of paraffin and acetylene and the formula of each. (4\

1.4State FOUR uses of hydrogen (4\

1.5Write down the formula of each of the following compounds:

1.5.1Magnesium oxide

1.5.2

1.6Draw the structural formula of i so butylene (5\ [25

Q2— Section header —

2.1Define or explain the following:

2.1.2Kinetic energy Viscosity of fluid (2 (3

2.2Explain the concept of latent heat of evaporation and a lso give ONE example. (4\ 11040012

2.3A pump with 85% efficiency runs for a period of 6 minutes to do 12 MJ of work Calculate the following

2.3.1The power of the pump in kW (4\

2.3.2The power of the source in kW (2\

2.4A flu id with a li near velocity of 3, 5 m/s flow in a pipe with an inside diameter of 40 mm. Calculate the quantity of fluid flowing in litres per second

2.5Determine the linear velocity if the diameter of the pipe increased to 60 mm with the quantity

Q2— Section header —

2.6An orifice in a pipe creates a pressure of 25 kPa when the flow is 10 000 litres per hour. Determine the differential pressure acr oss the orifice when the

Q3— Section header —

3.1Briefly explain the following parts in a fractionation column

3.1.2Stripping part Rectification (2\ (3\ 11040012

3.2Label the parts of a crude oil f ractionation tower marked . Write only t he answer next to the letter (A K\the ANSWER BOOK.

3.3Explain each of the following:

3.3.1Partial evaporation

3.3.2

3.4Give a detailed description of what happens when pressure in a distillation column increase without changing all other variables. (5\ [25] 1104001225

Q4— Section header —

4.1Indicate whether the following statements are TRUE or FALSE. Choose the answer and write only true or false

4.1.5\ the ANSWER BOOK.

4.1.3A B ourdon tube can be used to measure pressure /s refers to a rate variable 10

4.1.5

4.2Explain the most important requirements of the effective pr essure control of any process. (6\

4.3Explain the difference between the following and state the unit of each

4.3.2

4.4Name the TWO well known methods that are used to calibrate pressure gauges. (2\

4.5Sketch the rotating vane fl ow meter operating on the principle of positive displacement. (6\

4.6Name TWO primary measuring flow meters used in the industry. (2\ [25] TOTAL: 100 1104001225

Mark Allocation

Total100 marks

Sections25 + 25 + 25 = 75 marks

Paper information

TitleDocument

SubjectPlant Operation Theory

LevelN2

Document typeQuestion paper

Year2018

MonthAugust

Pages7

Downloads2

Examination context

Decade2010s

Years ago8y

SeasonWinter (SH)

Start dayWednesday

Exam periodAugust 2018

Days since exam2,994

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.

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