Question

Based on the principle of yarn formation, select the odd one among the following.

• A. Rotor spinning
• B. DREF 2 spinning
• C. Electrostatic spinning
• D. Two nozzle Airjet spinning

Hint:

Focus on the fundamental mechanism of yarn formation. Air-jet spinning, regardless of the number of nozzles, uses compressed air to wrap fibers. The others use different mechanical or electrical forces.

Answer 1

The Correct Option is C

Rotor spinning, DREF 2 spinning, and two-nozzle airjet spinning all rely on mechanical forces (twisting, wrapping, or aerodynamic forces) to form yarn from fibers. Electrostatic spinning, however, uses electric forces to draw and elongate a polymer solution or melt into nano- to micro-scale fibers. This fundamental difference in the yarn formation principle makes electrostatic spinning the odd one out.