Question

Choose the correct answer from the options given below: 
Arrange the machines of a ring spinning line in the sequence. 
A. Ring Frame 
B. Carding 
C. Speed frame 
D. Draw frame 

• A. A, B, C, D
• B. A, C, B, D
• C. B, D, C, A
• D. C, B, D, A"

Hint:

The spinning process is a gradual attenuation of the fiber stream: - Carding: Creates the first "Sliver". - Drawing: Perfects the "Sliver". - Speed Frame: Attenuates sliver into "Roving". - Ring Frame: Attenuates roving into "Yarn".

Answer 1

The Correct Option is C

Step 1: Understand the goal of a ring spinning line. The goal is to convert a mass of staple fibers (like cotton) into a fine, strong yarn. This is done through a sequence of machines, each performing a specific function.

Step 2: Analyze the function and position of each machine.
- B. Carding: This is one of the first major processes after opening and cleaning. The carding machine disentangles the fibers and forms them into a "sliver," a thick, untwisted rope of parallel fibers.
- D. Draw frame: The sliver from the card is fed to the draw frame. The primary function of the draw frame is to improve the evenness of the sliver by doubling (combining several slivers) and to further straighten and parallelize the fibers by drafting. This process is usually repeated (two passages of drawing).
- C. Speed frame (or Roving Frame/Simplex): The sliver from the draw frame is too thick to be spun directly into fine yarn. The speed frame drafts this sliver into a much thinner strand called "roving," and adds a small amount of protective twist. The roving is then wound onto bobbins.
- A. Ring Frame: This is the final machine. The roving from the speed frame is fed into the ring frame, where it is drafted to its final count, high twist is inserted to give it strength, and the finished yarn is wound onto a bobbin or cop.

Step 3: Assemble the correct sequence. The logical process flow is: Carding \(\rightarrow\) Draw frame \(\rightarrow\) Speed frame \(\rightarrow\) Ring Frame. This corresponds to the sequence B, D, C, A.