###### Question 42 (Textile Engineering & Fibre Science)

A shuttle loom producing 3 up 1 down twill fabric is running at 180 picks per minute. The angular velocity of the tappet (cam) shaft in radian per second, accurate to two decimal places, would be ………………

**[Show Answer]**

Write Here

**Given in the question**:

Weave type=**3 up 1 down twill**

i.e., **total picks=3+1 Total picks=4**

Fabric speed=

**180 picks per minute**

=180/60 picks per sec

Fabric speed=

**3 picks/sec**

The angular velocity of the

**tappet**(cam) shaft(

**radian/sec**)=

**?**

**Formula**:

Angular velocity(v)=

Where, N=Speed of tappet shaft(per sec)

**Tappet shaft speed(N)=Fabric speed/Total no. of picks**

Tappet shaft speed(

**N**)=

**3/4 per sec**

Angular velocity(v)=

Angular velocity(v)=2 x 3.14 x 3/4

**Angular velocity of tappet shaft(v)=4.71 radian/second (Answer)**