Power Machines N5 — Document

November 2019 — N5 — Power Machines

N5 2019 Nated Engineering

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📋 Document Analysis

🎯 1 marks ⏱️ 3h 📄 5 pages 📝 34 items found 📚 1 topics

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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 —

1.1The provisi ons of regulation C91 elaborate on the design, construct ion and manufacturing of boilers. State THREE important requirements

1.210

Q2— Section header —

2.1The gas characteristic constant in kJ/kg.K (3\

2.2The final temperature (3\

2.3The final volume (3\

2.4The work done during compression (4\

2.5The change in i nternal energy (3\

2.6The h eat rejected during compression (4\ [20]20

Q3— Section header —

3.1The dryness fraction of the steam in the sep arating calorimeter (3\

3.2The dryness fraction of steam in the throttling calorimeter (9\

3.3The dryness fraction of the steam in the steam mains (4\

3.4he volume of steam in the mains for 3 kg steam by using the answer to

Q3— Section header —

Q4— Section header —

4.1A condenser receives 8 500 kg steam per hour with a dryness fraction of 0,85. The barometer reading and ma nometer reading is 760 mmHg and 660 mmHg respectively. The mass of air is 0,25 kg/s whilst air pump and

4.1.1The absolute pressure of the steam in the condenser (2\

4.1.2The mass of cooling water in kg/h (6\

4.1.3The capacity of the air pump in m /min (5\

4.2A watt governor has arms which are 280 mm long. The arms form an angle of 30 with the vertical spindle. The rotating balls each have a mass of 1,2 kg. Calculate the centrifugal force

Q5— Section header —

5.1Construct , to scale 1 cm = 50 m/s, landscape orientated velocity diagram in

5.2Determine each of the following from the velocity diagram drawn in

Q5— Section header —

5.2.1The nozzle angle

5.2.2

5.3Use the diagram

Q5— Section header —

Q6— Section header —

6.1The higher heat value of the fuel in MJ/kg (3\

6.2The lower heat value of the fuel in MJ/kg (3\

6.3

Multiple Choice Options

C)The cooling water enters at 20

Topics Identified

Business Plan

Mark Allocation

Total100 marks

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

Paper information

TitleDocument

SubjectPower Machines

LevelN5

Document typeQuestion paper

Year2019

MonthNovember

Pages8

Downloads3

Examination context

Decade2010s

Years ago7y

SeasonSpring (SH)

Start dayFriday

Exam periodNovember 2019

Days since exam2,535

About Power Machines 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

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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

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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 size274.3 KB

Pages8

Archived on8 September 2026

File age46d

ContributorFreeMode

Fingerprint8B5AB06D7A0A

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