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Question

Which of the following is a closely woven fabric with a pebbly surface produced by a dobby attachment?

The correct answer is
Barathea

Fabric Identification: Barathea

The question asks to identify a specific type of fabric characterized by three key features: being closely woven, having a pebbly surface, and being produced using a dobby attachment on a loom.

Analyzing Fabric Characteristics

  • Barathea: This fabric type is known for its closely woven structure and a distinctive granular or pebbly surface texture. It is often produced using a dobby mechanism, which allows for the creation of small, complex patterns and textures, resulting in the characteristic pebbly appearance. Barathea is typically made from worsted wool.
  • Balbriggan: This is usually a type of soft, stretchy, knitted cotton fabric, often used for underwear or T-shirts. Its knitted structure differs significantly from the closely woven requirement, and it doesn't typically have a pebbly surface.
  • Bengaline: Bengaline is characterized by prominent warp ribs, creating a distinct corded appearance. While closely woven, its texture is ribbed, not pebbly, and it's not specifically associated with dobby attachments for its defining characteristic.
  • Bark cloth: This fabric is made by pounding the inner bark of certain trees. Its texture is natural and fibrous, unlike the manufactured pebbly surface of a woven fabric produced by a dobby attachment.

Based on the analysis, Barathea is the fabric that matches all the specified criteria: closely woven, pebbly surface, and produced with a dobby attachment.

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Important Questions from Properties of Materials

  1. The photoelectric current depends on which of the following factors?

    1. The frequency of the incident light

    2. The intensity of the incident light

    3. The potential difference between the electrodes

    4. The photosensitivity of the non-mental
  2. Vanadium is added to steel as an alloying element to

  3. Babbit is an alloy of

  4. To improve the machinability, the alloying element of steel is:

  5. Which of the following hardness tests is best suitable for brittle materials such as ceramics?

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