Group I Group II P. Multiphase 1. Matched cam Q. Projectile 2. Profile reed R. Air-jet 3. Crank shaft S. Shuttle 4. Weaving rotor
Matching Looms and Components
This section details the correct pairing of looms from Group I with their associated components from Group II.
Matching Logic Breakdown
- P. Multiphase Loom: This type of loom is characterized by simultaneous weaving phases and is often associated with the 4. Weaving rotor, which aids in high-speed yarn insertion.
- Q. Projectile Loom: Projectile looms utilize a small projectile to carry weft yarn. Their operation, including shed formation and projectile release/pickup, is typically controlled by a 1. Matched cam mechanism.
- R. Air-jet Loom: In air-jet looms, compressed air propels the weft. A specifically designed 2. Profile reed is used to create a stable shed and guide the airflow effectively during weft insertion.
- S. Shuttle Loom: Traditional shuttle looms use a shuttle carrying weft yarn. The primary drive and motion control, including shedding, are commonly managed by a 3. Crank shaft system.
Resulting Pairs
The established matches are:
- P – 4
- Q – 1
- R – 2
- S – 3
Correct Option
The correct set of matches (P-4, Q-1, R-2, S-3) corresponds to Option C.
Important Questions from FABR Shuttle Looms and Shuttleless Looms
- Profile reed is used in
- In a projectile weaving machine, the projectile travels through the shed at an average speed of $24$ m/s taking $2/3^{rd}$ of the loom cycle. If the efficiency of the weaving machine is $90\%$, the weft insertion rate (m/min) is (answer in integer) _________
- In a loom, seven-wheel take-up motion is
A shuttle loom having 1.75 m reed width is running at 180 rpm. The shuttle enters and leaves the shed at $120^\circ$ and $240^\circ$ angular positions of crankshaft, respectively. If length of the shuttle is 0.25 m, then the mean velocity (in m/s) of the shuttle within the shed is________.
The diameter and length of torsion rod used in a projectile loom are increased by 5% and 20%, respectively. If the torque required to twist the rod increases by X%, then the value of X, accurate to two decimal places, is_______.
