The following equipment is used for crushing and grinding of minerals in the preparation of traditional ceramics raw materials. Which of the pieces listed is used for grinding (two correct answers)

• ball mill

• hammer mill

• jaw crusher

• roll crusher

• roller mill

Which one of the following compounds becomes a plastic and formable material when mixed with suitable proportions of water

• aluminum oxide

• hydrogen oxide

• hydrous aluminum silicate

• silicon dioxide

At which one of the following water contents does clay become a suitably plastic material for the traditional ceramics plastic forming processes

• 5%

• 10%

• 20%

• 40%

Which of the following processes are not plastic forming methods used in the shaping of traditional ceramics (three correct answers)

• dry pressing

• extrusion

• jangling

• jiggering

• jolleying

The term green piece in ceramics refers to a part that has been shaped but not yet fired

• true

• false

In the final product made of a polycrystalline new ceramic material, strength increases with grain size

• true

• false

Which one of the following processes for the new ceramic materials accomplishes shaping and sintering simultaneously

• doctor-blade process

• freeze drying

• hot pressing

• injection molding

• isostatic pressing

Which of the following are the purposes of finishing operations used for parts made of the new ceramics (two best answers)

• apply a surface coating

• electroplate the surface

• improve surface finish

• increase dimensional accuracy

• work harden the surface

Which of the following terms describes what a cemented carbide is (one best answer)

• ceramic

• cermet

• composite

• new ceramic

• traditional ceramic

Which of the following geometric features should be avoided if possible in the design of structural components made of new ceramics (three best answers)

• deep holes

• rounded inside corners

• rounded outside corners

• sharp edges

• threads