Sewing Machine Quiz
Questions: 16 · 10 minutes
1. A regular universal needle repeatedly skips stitches on a stretchy knit. Which change is most appropriate?
Switch to a wing needle
Use the largest available universal needle
Lower the feed dogs for the entire seam
Try a ballpoint, jersey, or stretch needle suited to the fabric
2. What do raised feed dogs do during normal machine sewing?
Regulate the amount of thread released by the spool
Move the fabric under the presser foot between stitches
Keep the needle from bending sideways
Wind the lower thread onto the bobbin
3. Which presser foot is designed to let the needle stitch close to zipper teeth or another raised edge?
Zipper foot
Darning foot
Blind-hem foot
Button-sewing foot
4. A line of loose upper-thread loops appears on the underside of a test seam. What should you check first?
Whether the stitch length is set too short
Whether the feed dogs need to be lowered
Whether the upper thread is correctly seated in the tension path
Whether the bobbin contains a different thread color
5. The upper thread begins snapping near the needle immediately after you install a new needle. What should you inspect first?
Whether the bobbin thread matches the fabric color
Whether the machine's light is switched on
Whether the needle is correctly oriented, fully inserted, and undamaged
Whether the reverse control can be held down continuously
6. What is the usual purpose of sewing a few reverse stitches at the beginning or end of a straight seam?
To make the entire seam stretchier
To help secure the seam against unraveling
To wind additional thread onto the bobbin
To enlarge the seam allowance
7. Very lightweight fabric is being pushed into the needle-plate opening as the seam begins. Which approach is most likely to help?
Change to the widest zigzag setting
Install a much larger needle to widen the opening
Loosen the bobbin-case screw as far as possible
Support the starting area with an appropriate stabilizer or tissue
8. You need to maintain a consistent 5/8-inch seam allowance along a straight edge. What is the most direct machine-based guide?
The bobbin-winding spindle
The upper-thread tension dial
The handwheel's outer rim
The appropriate seam-guide marking on the needle plate or an attached seam guide
9. You are moving from lightweight cotton to several layers of denim. Which needle change is generally most suitable?
Use a finer embroidery needle regardless of thread weight
Use a blunt hand-sewing needle in the machine
Choose a larger jeans or denim machine needle appropriate to the project
Remove the needle and sew using only the presser foot
10. Before changing a needle or cleaning near the machine's moving parts, what is the safest general step?
Set the machine to its longest stitch
Raise the thread tension to its maximum
Switch off and unplug the machine, following its manual
Remove only the spool of thread
11. Why should lint be removed regularly from the bobbin and feed-dog area according to the machine manual?
To prevent buildup from interfering with smooth machine operation
To change a straight stitch into a zigzag
To make the bobbin hold more thread than its designed capacity
To permanently increase the motor's sewing speed
12. Immediately after you begin sewing, a tangled mass of thread forms under the fabric. What is the best response?
Continue sewing faster so the machine can clear the tangle
Stop, remove the tangle, rethread correctly, and control the thread tails when restarting
Increase stitch width without removing the tangled thread
Pull the fabric firmly backward while the needle is moving
13. Compared with an ordinary construction seam, which stitch-length choice is generally suitable for temporary machine basting?
The shortest possible stitch length
A longer stitch length
A dense satin-stitch setting
A zero-length stitch with the feed dogs lowered
14. What is the main purpose of a standard presser foot?
To hold the fabric against the feed dogs while it moves through the machine
To wind thread evenly onto the bobbin
To control how tightly the upper thread is wound on its spool
To sharpen the needle as it enters the fabric
15. In a well-balanced lockstitch, where should the upper and bobbin threads generally interlock?
Around the presser-foot shank
In loose loops below the fabric
Entirely on the top surface
Within the layers of fabric
16. What does the bobbin normally supply when a sewing machine forms a lockstitch?
The lower thread that interlocks with the upper thread
The thread that passes through the needle
Extra thread used only for reverse stitching
The thread that secures fabric under the presser foot