← Engineering & Manufacturing syllabus

Northern IrelandEngineering & Manufacturing

Quality, Tolerance and Costs

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

What are direct and indirect costs, and how do they make up the cost of a product?

Direct and indirect costs of manufacture, fixed and variable costs, and calculating the cost of producing a product.
A CCEA GCSE Engineering and Manufacturing answer on the direct and indirect costs of manufacture, fixed and variable costs, and how to calculate the total cost and cost per item of producing a product.
11 min answer →

How do the form and supply of a material, and its disposal, affect cost and sustainability?

Material costs: the effect of stock form and shape and quantity on cost, and the cost and sustainability of material disposal and recycling.
A CCEA GCSE Engineering and Manufacturing answer on material costs, how the stock form, shape and quantity of a material affect price, and the cost and sustainability issues of disposal and recycling.
11 min answer →

How do manufacturers make sure products are made to the right quality?

Quality control and quality assurance: inspection, measuring instruments, gauges and the difference between QC and QA.
A CCEA GCSE Engineering and Manufacturing answer on quality control and quality assurance, the inspection and measuring instruments used, the role of gauges, and the difference between QC and QA.
11 min answer →

What is tolerance, and how do engineers use upper and lower limits to control accuracy?

Tolerance and dimensional accuracy: nominal size, upper and lower limits, and calculating the tolerance of a dimension.
A CCEA GCSE Engineering and Manufacturing answer on tolerance and dimensional accuracy, covering nominal size, upper and lower limits, calculating tolerance, and why tolerances let parts be made and fit together.
11 min answer →