National Qualiﬁcations 2025 - Engineering Science - Mark X823/76/01

Sep 17, 2026

Uploaded by Logic

Engineering Science National Qualifications 2025 exam paper covering multiple sections and nine question prompts. Topics include digital logic by drawing a NAND-equivalent circuit and simplifying logic, op-amp calculations and gain adjustment plus required amplifier configuration, statics reactions from frame structures, control-system completion for an air-fryer programmable heating system, equilibrium in concurrent force systems, impacts of vehicle adjustment and special effects superimposition, and materials/design analysis using stress–strain properties and free-body diagrams with nodal analysis.

LanguageEnglish

CategoryExam

FormatPDF

Pages44

Reading Time1 h 51 min

AccessFree to download

SECTION 1

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

SECTION 2

Question 7 (a)

Question 7 (b)

FOR OFFICIAL USE H | | | | | | | | --- | --- | --- | --- | --- | --- | National Quali􀃛cations 2025 Mark X823/76/01 FRIDAY, 16 MAY 1:00 PM – 3:30 PM Engineering Science *X8237601* 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 Higher 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. *X823760101* A/PB SECTION 1—20 marks Attempt ALL questions 1. An electronic engineer has designed the following circuit as part of a remote‑controlled product. Z Draw a NAND equivalent for the circuit shown above. Simplify where appropriate. | A
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C | Z | | --- | --- | *X823760102* page 02 MARKS 4 | DO NOT
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MARGIN | | --- | | | 2. An op‑amp circuit is shown. 270 kΩ 12 kΩ 0 V (a) Calculate the output voltage (Vout) . (b) Describe how the gain of the op‑amp could be decreased. | | | --- | | | An additional op‑amp is required to combine Vout with two other voltage signals. (c) State the op‑amp configuration required to perform this task. [Turn over *X823760103* page 03 MARKS 1 1 1 | DO NOT
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MARGIN | | --- | | | MARKS 3. At a concert venue, frame structures are used to hold lighting in position. A frame structure is shown below. A B Calculate the magnitude and indicate the direction of the reaction at B. 4 | DO NOT
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MARGIN | | --- | | | *X823760104* page 04 4. The temperature inside an air fryer is set using a control panel. A programmable heating system monitors the temperature inside the air fryer and maintains a set temperature. Complete the control diagram below for the programmable heating system of the air fryer. set temperature output driver internal cooking temperature [Turn over *X823760105* page 05 MARKS 3 | DO NOT
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MARGIN | | --- | | | MARKS 5. A concurrent force system is shown. 550 N Calculate the magnitude of the force, R, and the angle, θ, required to maintain equilibrium. 4 | DO NOT
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MARGIN | | --- | | | *X823760106* page 06 6. A specially engineered car is used in the production of a film. It can be adjusted so that many features such as its length and width can match those of other cars (eg classic or rare cars) . After filming it in a scene, a special effects team superimpose the bodywork and the look of the car that the filmmaker wants to see. original image superimposed image Describe two impacts that this technology would have on a company making a film. Impact 1 Impact 2 | | | --- | | | [Turn over *X823760107* page 07 MARKS 2 | DO NOT
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MARGIN | | --- | | | SECTION 2—90 marks Attempt ALL questions 7. A team of engineers is asked to design a viewing p

FAQs

What does the exam require for Section 1 questions?

Attempt ALL questions in Section 1, showing working and units where appropriate, using blue or black ink, and following the booklet instructions for writing clearly in the provided spaces.

How is the NAND equivalent requested for the circuit in Question 1?

The question asks to draw a NAND equivalent for the given circuit and simplify where appropriate.

What calculation methods are used in Question 7?

Question 7(a) requires describing material properties using the stress–strain graph, and Question 7(b) requires nodal analysis to determine force magnitudes and their nature in members AB, AD, BD, and BC.

Sep 17, 2026

Uploaded by Logic