This page has every Power Machines N6 April paper we have, from 2013 to 2021: 7 question papers and 6 memos in 13 PDFs. The newest year is first. Each paper shows the first page of questions, its marks and time, and what the questions cover.
Power Machines N6 April papers by year
Power Machines N6 April 2021 question papers and memos
April 2021
Power Machines N6 April 2021 question paper
100 marks · 3 hours · 6 pages · 5 questions
What is in this paper (5 questions)
Q1
A methyl chloride refrigeration plant operates between temperature limits of -8 °C and 20 marks
Q2
A boiler plant burning fuel with a calorific value of 32 MJ/kg generates superheated 20 marks
Q3
A single-cylinder engine operating on the dual-cycle principle has a cylinder volume of 20 marks
Q4
The two rows of moving blades of a velocity-compounded two-stage impulse steam 20 marks
Q5
A gas expands in a convergent-divergent nozzle from a pressure of 3 200 kPa to a 20 marks
Instructions to candidates Answer all the questions. Read all the questions carefully. Number the answers according to the numbering system used in this question paper. Questions may be answered in any order but keep subsections of questions together. All sketches and diagrams must be neat, fully labelled and be drawn in pencil in the ANSWER BOOK. Write down all formulae used. Show all intermediate steps for calculations. Approximate final answers correctly to THREE decimals unless stated otherwise. Use only a black or blue pen. Write neatly and legibly. (8190046) -3-
Power Machines N6 April 2020 question papers and memos
April 2020
Power Machines N6 April 2020 question paper
100 marks · 3 hours · 7 pages · 5 questions
What is in this paper (5 questions)
Q1
A four-cylinder engine operating on the fr-stouroke diesel cycle princ iplheas an 20 marks
Q2
Steam expands through a convergent-divergent nozzle at a rate of 275 kg/min to th e 20 marks
Q3
A five-stage, single-acting, reciprocating compressor induces 14,4 m³ of air per minute 20 marks
Q4
An air preheater was installed in a boiler plant tio mprove the efficiency .During tests 20 marks
Q5
The ammonia in a vapour-compression refrigerator leaves the compressor as a dry 20 marks
Instructions to candidates Answer all the questions. Read all the questions carefully. Number the answers according to the numbering system used i n this question paper. Answer questions in any order, but keep subsections of questions together. All sketches and diagrams must be neat, fully labelledan d drawn in pencil in the ANSWER BOOK. Write down all formulae used. Show all intermediate steps for calculations. Approximate final answers correctly to THREE decimal places unless stated otherwise. Use only a black or blue pen. Write neatly and legibly. (8190046) -3-
Power Machines N6 April 2019 question papers and memos
April 2019
Power Machines N6 April 2019 question paper
100 marks · 3 hours · 6 pages · 5 questions
The memo for this paper is not available yet.
What is in this paper (5 questions)
Q1
A steam plant consisting of an economiser, an evaporator and a superheater 20 marks
Q2
The cylinder volume of a single-cylinder engine operating on the dual-cycle principle is 20 marks
Q3
A velocity-compounded impulse gas turbine receiving gas at a mass flow rate of 20 marks
Q4
Superheated steam at a pressure of 2 MPa and a temperature of 250 °C enters a 20 marks
Q5
A two-stage single-acting reciprocating compressor takes in 54 000 cm³ of air per cycle 20 marks
Instructions to candidates Answer ALL the questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Questions may be answered in any order but subsections of questions must be kept together. ALL sketches and diagrams must be neat, fully labelled, and drawn in pencil in the ANSWER BOOK. ALL formulae used must be written down. Show ALL intermediate steps for calculations. Final answers must be approximated to THREE decimals, unless stated otherwise. Use only BLUE or BLACK ink. Write neatly and legibly. (8190046) - 3 -
Power Machines N6 April 2018 question papers and memos
April 2018
Power Machines N6 April 2018 question paper
100 marks · 3 hours · 9 pages · 7 questions
What is in this paper (7 questions)
Q1
Steam is expanded in a convergent-divergent nozzle to an exit pressure of 600 kPa 20 marks
Q2
The blades of a two-stage velocity-compounded impulse turbine has an average 20 marks
Q3
An open-circuit, continuous-combustion, constant-pressure gas turbine receives air 20 marks
Q4
A three-stage, single-acting, reciprocating air compressor delivers 900 kg/h of air to an 20 marks
Q5
An engine operating on the ideal constant-volume cycle, using air as the working fluid, 20 marks
Q6
The overall thermal efficiency of a steam boiler plant consisting of an economiser, 20 marks
Q7
A vapour-compression refrigeration plant uses 0,5 kg/s of ammonia as a refrigerant. 20 marks
Instructions to candidates Answer any FIVE questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Questions may be answered in any order, but keep subsections of questions together. ALL sketches and diagrams must be neat, fully labelled and drawn in pencil in the ANSWER BOOK. Write down ALL formulae used. Show ALL intermediate steps for calculations. Answer questions in blue or black ink only. Write neatly and legibly. (8190046) -3- T1400(E)(A12)T
Power Machines N6 April 2016 question papers and memos
April 2016
Power Machines N6 April 2016 question paper
100 marks · 3 hours · 7 pages · 7 questions
What is in this paper (7 questions)
Q1
A two-stage, single-acting, reciprocating compressor takes in air at a tempo of 20 marks
Q2
In a boiler plant consisting of an evaporator, an economiser and a superheater, steam 20 marks
Q3
A compression-ignition engine working on the dual cycle takes in two thirds of its total 20 marks
Q4
Air enters a nozzle at a pressure of 3 MPa, a temperature of 480 °C and a speed of 20 marks
Q5
A ship is fitted with a turbo-charged two-stroke oil engine, with five single-acting 20 marks
Q6
A two-stage, velocity compound steam turbine has blading designed for an axial 20 marks
Q7
A refrigeration plant uses methyl chloride and operates between pressure boundaries 20 marks
Instructions to candidates Answer ANY FIVE questions. Read ALL the questions carefully. Number the answers according to the numbering system used in this question paper. Questions may be answered in any order, but subsections of questions must be kept together. ALL formulae used must be written down. Show ALL the intermediate steps. Questions must be answered in BLUE or BLACK ink All sketches and diagrams must be done in pencil in the ANSWER BOOK. Write neatly and legibly. 8190046) -3- T1350(E)(M31)T NOTE: Answer ANY FIVE questions in this question paper.
Power Machines N6 April 2015 question papers and memos
April 2015
Power Machines N6 April 2015 question paper
Power Machines N6 April 2013 question papers and memos
April 2013
Power Machines N6 April 2013 question paper
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Questions about these papers
Which years of Power Machines N6 April papers are on this page? Papers from 2021, 2020, 2019, 2018, 2016, 2015, 2013. The newest year is at the top.
How many marks is the Power Machines N6 April paper? The paper is usually out of 100 marks and you get 3 hours to write it.
Are the memos included? Yes. 6 of the 7 papers on this page have their marking memo next to the question paper.
