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N5_Engineering-Science_QP_2022.pdf
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N5FOR OFFICIAL USE
National
Qualications Mark
2022
X823/75/01 Engineering Science
WEDNESDAY, 18 MAY
1:00 PM – 2:50 PM *X8237501*
Fill in these boxes and read what is printed below.
Full name of centre Town
Forename(s) Surname Number of seat
Date of birth
Day Month Year Scottish candidate number
Total marks — 110
SECTION 1 — 20 marks
Attempt ALL questions.
SECTION 2 — 90 marks
Attempt ALL questions.
Show all working and units where appropriate.
You should refer to the National 4/5 Engineering Science Data Booklet which you have been given.
The number of significant figures expressed in a final answer should be equivalent to the least
significant data value given in the question. Answers that have two more figures or one less
figure than this will be accepted.
Write your answers clearly in the spaces provided in this booklet. Additional space for answers is
provided at the end of this booklet. If you use this space you must clearly identify the question
number you are attempting.
Use blue or black ink.
Before leaving the examination room you must give this booklet to the
Invigilator; if you do not, you may lose all the marks for this paper.
©
*X823750101*
A/PB
, MARKS DO NOT
WRITE IN
THIS
MARGIN
SECTION 1 — 20 marks
Attempt ALL questions
1. A gear train is shown below.
gear A
(a) State the type of gear train shown. 1
(b) State the name of gear A . 1
2. An incomplete system diagram for a hair dryer is shown.
cold air hot air
hair dryer
user input
(a) Complete the system diagram above by adding the missing output. 1
(b) State the type of control that has no feedback. 1
*X823750102*
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3. A force of 2200 N is required to push a workbench across a workshop floor.
Calculate the work done when the workbench is pushed a distance of 12 m. 2
4. Transistors are used in many electronic products.
X
(a) Describe the function of a transistor. 1
(b) State the name of connection X on the transistor symbol above. 1
[Turn over
*X823750103*
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5. A tensioner is used to tighten the wire on a farm fence.
A 25 m length of wire was stretched by 0.012 m when fully tensioned.
(a) Calculate the strain in the wire. 2
The table below shows details of materials that were considered for the wire.
Material Corrosion resistant Property
A no ductile
B yes brittle
C yes ductile
D no brittle
(b) Select the most suitable material (A–D) from the table for the wire and justify
your choice. 2
Choice of material
Justification
*X823750104*
page 04
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