###### Question 31 (**Textile Technology & Fibre Science**)

Keeping the speed of all other components of a carding machine unchanged, the angular velocity of a cylinder with damaged wire points in an area of 2 cm x 2 cm is doubled. Wavelength of the periodic fault in the card sliver would be

(A) | Same |

(B) | Halved |

(C) | Doubled |

(D) | Tripled |

**[Show Answer]**

Let us assume, the initial angular velocity of the cylinder(v1) =v

Then, Final angular velocity of the cylinder(v2)=2v

By formula;

Wavelength of the periodic fault() is inversaly propotional to angular velocity of the carding cylinder

Wavelength of the periodic fault in the card sliver would be halved. (Ans)