Question:

In which of the following, number of teeth decides the Noil % in Comber

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In comber, ratchet teeth control feed length, which directly influences noil percentage.
Updated On: Jul 4, 2026
  • Circular Bevel
  • Worm Wheel
  • Ratchet
  • Helical gear
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The Correct Option is C

Solution and Explanation

Concept: In a comber, the feed motion is controlled by a ratchet mechanism. The number of ratchet teeth determines the amount of feed given per cycle. Since feed length directly affects fibre selection, it also controls the noil percentage.

Step 1:
Understand feed mechanism.
Comber feed is controlled in discrete steps using ratchet and pawl mechanism. \[ \text{Ratchet teeth} \Rightarrow \text{Feed length control} \]

Step 2:
Relate feed to noil.

• More feed → less fibre removal → lower noil
• Less feed → more fibre removal → higher noil

Step 3:
Identify correct component.
Only ratchet mechanism directly uses number of teeth to control motion.

Step 4:
Final answer selection.
Thus, \[ \boxed{\text{Ratchet}} \] So, \[ \boxed{\text{Option (C) is correct.}} \]
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