Question

The approximate lot size fed to a jet dyeing machine

• A. 50 -- 80 kg
• B. 60 -- 90 kg
• C. 120-- 140 kg
• D. exactly 100 kg

Hint:

• Jet Dyeing Machines Used for dyeing fabrics in rope form, especially synthetics and blends.
• Lot Size (Capacity) Varies greatly with machine design and size (from lab scale to very large production units).
• Typical production jet dyeing machines often have capacities per tube (chamber) in the range of 100 kg to 250 kg}.
• The range 120-140 kg is a reasonable representation of a common medium-capacity production jet.
• Machines can also be multi-tube, increasing the total batch size.

Answer 1

The Correct Option is C

Jet dyeing machines are used for dyeing fabrics, especially those made from synthetic fibers like polyester, or blends, often in rope form. They use high-velocity jets of dye liquor to propel and circulate the fabric, ensuring good dye penetration and levelness, particularly for delicate or hydrophobic materials. The "lot size" (batch size) of a jet dyeing machine refers to the weight of fabric that can be processed in one dyeing cycle. This capacity varies significantly depending on the machine's design, size (diameter and length of the dyeing vessel/tube), and the type of fabric being processed (its weight per unit area, thickness, and behavior in rope form). Typical ranges for jet dyeing machine capacities:

• Sample/Pilot machines: Can be very small (e.g., 1-10 kg).
• Small production machines: Might range from 50 kg to 100 kg.
• Medium production machines: A very common range for production machines is around 100 kg to 250 kg per tube or chamber. Many machines have multiple tubes, increasing total batch capacity.
• Large production machines: Can go up to 300-500 kg per tube, or even larger for specialized applications or multi-tube configurations.

The question asks for "the approximate lot size". This implies a typical or common production machine size. Let's look at the options: % Option (a) 50 -- 80 kg: This is on the smaller side for a standard production jet. % Option (b) 60 -- 90 kg: Still somewhat small for typical full-scale production. % Option (c) 120 -- 140 kg: This range (and slightly higher, e.g., up to 200-250 kg per tube) is very representative of common industrial jet dyeing machine capacities per chamber/tube. A machine with a capacity of, say, 150 kg, 180 kg, or 200 kg per tube is quite standard. So, 120-140 kg falls well within this typical production scale. % Option (d) exactly 100 kg: While 100 kg machines exist, it's rarely "exactly" one value; capacities are usually given as a nominal range or a maximum. Considering the options, 120-140 kg represents a plausible and common approximate lot size for a production-scale jet dyeing machine tube. Machines are often specified with nominal capacities like 100kg, 150kg, 200kg, 250kg per tube. If option (c) is correct, it points to a common medium-sized production machine. \[ \boxed{\text{120-- 140 kg}} \]