Question

Cone winding machines equipped with electronic yarn clearers remove the following defect(s) from the spun yarn:

• A. imperfections
• B. objectionable faults
• C. long hairs
• D. vegetable matters

Hint:

Electronic yarn clearers focus on detecting faults in the yarn that would be considered objectionable in the final fabric, improving the overall quality of the yarn. They can also remove vegetable matter.

Answer 1

The Correct Option is B, D

Step 1: Understanding the role of yarn clearers.
Electronic yarn clearers are used in cone winding machines to detect and remove defects from the yarn during the winding process. These defects can include:
Impurities,
Irregularities in yarn thickness, 
And more significant defects such as weak spots or thick-thin spots.
Step 2: Types of defects removed by electronic yarn clearers. 
Electronic yarn clearers are primarily designed to detect and remove objectionable faults in the yarn that may affect the quality of the final fabric, such as thick and thin places, knots, or defects in the structure. In addition to that, yarn clearers can also detect and remove vegetable matter such as fibers from plant sources, which are not desirable in the final yarn. 
Step 3: Conclusion. 
Thus, the correct answer is (B) objectionable faults and (D) vegetable matters, as electronic yarn clearers specifically target these defects in the yarn.