Question

In which looms, the maintenance cost is very high

• A. Air Jet
• B. Rapier
• C. Gripper Projectile
• D. Two Phase

Hint:

Higher mechanical synchronization in looms leads to higher maintenance cost; two-phase looms are the most complex.

Answer 1

The Correct Option is D

Concept: Different weaving machines have different mechanical complexity. Two-phase looms operate with highly synchronized and complex motion systems requiring precise control of two shed formations per cycle. This increases mechanical complexity and maintenance requirements.

Step 1: Understand loom complexity.
Higher mechanical synchronization → higher maintenance cost.

Step 2: Compare loom types.

• Air jet → high speed but well optimized
• Rapier → moderate maintenance
• Projectile → robust and durable
• Two-phase → highly complex mechanism

Step 3: Identify highest maintenance.
Two-phase looms require the most complex timing and mechanical coordination.

Step 4: Final answer selection.
\[ \boxed{\text{Two Phase Loom}} \] Thus, \[ \boxed{\text{Option (D) is correct.}} \]