Applied assessment — laboratory and performance testing

Module quiz

8 questions on Module 3 — Laboratory. Answer them all, then check your score before moving on. 6 correct or more is a pass. Your best score is saved on this device, and to your account when you are signed in. This is a self-check, not an accredited assessment.

1. 1. A colourfastness to washing result is reported as 3 for staining on the multifibre adjacent fabric. What does that mean commercially?

   The shade will fade on the shelfThe dye transfers onto other fabrics in the wash, so the garment risks staining the consumer's laundry and a care warning or a dye change is neededThe fabric will shrinkThe garment failed pilling

2. 2. Which failure most often explains a garment that measures correct before wash and short after?

   Tensile strengthDimensional stability to washing — the fabric shrinks and the pattern did not allow for itColourfastness to rubbingSeam slippage

3. 3. A lab reports pilling grade 2 after 5,000 rubs on a polyester fleece. What is the sound response?

   Retest until a better grade appearsTreat it as a fabric construction and finishing issue, discuss with the mill, and check whether the buyer's requirement allows it before productionAdd a care label warning and shipChange the sewing thread

4. 4. What makes a test result traceable?

   The lab's logo on the reportThe stated method, specimen identity, conditioning, equipment calibration and date, so the result can be repeatedThe signature of the QA managerThat it was done in-house

5. 5. Seam slippage fails on a woven trouser side seam. Which change addresses the cause rather than the symptom?

   Reduce the stitch length onlyReview fabric construction and seam type together — yarn slippage in a loose weave needs a different seam or fabric, not just tighter stitchingPress the seam harderUse a heavier thread only

6. 6. Why is conditioning specimens before physical testing required?

   To clean the specimenBecause moisture content changes dimensions and strength, so results are only comparable at a controlled atmosphereTo remove dyeTo relax the seams

7. 7. Your in-house lab passes a fabric that the buyer's third-party lab fails on the same property. What do you investigate first?

   Accuse the third-party lab of errorMethod and specimen: same standard version, same specimen location and conditioning, and equipment calibration on both sidesChange the fabric supplierAsk for a retest at a third lab immediately

8. 8. Which test result would justify stopping a shipment of children's nightwear outright?

   Grade 3-4 crockingA flammability or small-part security failure, because it is a safety requirement rather than a performance preferenceSlight pillingA 1 per cent shrinkage result