ABE (CHAP07 Size Reduction in Food Processing)

Process of making too-large-to-be-used solid materials usable.

• Size reduction

• Grinding

• Cutting

• All of the above

Size-reduction processes include ____.

• cutting

• crushing

• grinding

• All of the above

Raw materials for feeds are processed primarily using a size-reduction equipment to ____.

• increase the surface area of contact of the material to facilitate taking place of reaction

• make it palatable when used as feed for animals

• facilitate conveyance operation at the feed mill

• All of the above

Physical mechanism used in size-reduction process.

• Compression

• Impact

• Attrition

• Cutting

• All of the above

Which of the following statements is true in relation to size-reduction operation?

• Size reduction is the most inefficient unit operation in terms of energy use.

• Size reduction is the most efficient unit operation in terms of energy use.

• Size reduction is neither efficient nor inefficient unit operation in terms of energy use

• None of the above

Which of the following statements is true in relation to reducing particle size of a material?

• Reduction of materials to very fine sizes is more costly in terms of energy as compared with reduction to relatively coarse particles.

• Reduction of materials to very fine sizes is much cheaper in terms of energy as compared with reduction to relatively coarse particles.

• Reduction of materials to very fine sizes has the same cost as with reduction to relatively coarse particles.

• None of the above

Which of the following is an example of size-reduction processes?

• Chopping corn fodder

• Slicing of sweet potato

• Milling of cassava into flour

• All of the above

Trade term used relative to the reduction of grains into meal or flour.

• Shredding

• Crushing

• Milling

• None of the above

Vertical-axis hammer mill is more advantageous to use than horizontal-axis for the reason that:

• It is more effective in grinding grains with higher moisture content of up to 25%.

• The power requirement of the vertical-axis hammer mill is much lower than that of the horizontal-axis hammer mill.

• Less broken grains can be derived from vertical-axis.

• None of the above

Size-reduction machines are characterized based on ____.

• capacity

• power required unit material reduce

• size and shape of the product after reduction

• range of size and shape of resulted product

• All of the above