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Consider the following statements regarding corrosion of ceramic material: 1. Ceramic materials are much better suited to withstand most of these environments for reasonable time periods than are metals. 2. Corrosion of ceramic materials generally involves simple chemical dissolution, in contrast to the electrochemical processes found in metals. 3. Ceramic materials are not frequently used because of their non-resistance to corrosion. Which of the above statements is/are correct?
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: The crystallinity of ceramic materials ranges from highly oriented to semi-crystalline, vitrified, and often completely amorphous.  B: A ceramic is a solid material comprising an inorganic compound of metal or metalloid and non- metal with ionic or covalent bonds. C: Most often, fired ceramics are either vitrified or semi-vitrified as is the case with earthenware, stoneware, and porcelain. D: Common examples of ceramic are earthenware, porcelain, and brick.
Ceramic nanoparticles are classified into three groups – ceramic nanoparticles, ceramic nanoscaffolds and ceramic nanoclays.
Consider the following statements regarding the electrical properties of ceramic materials: 1. They are practically non-conductors at a lower temperature. 2. Ordinary glass and silicates in the molten state are dependable as electrical non-conductors. 3. They offer high resistance to the current transmission and get heated soon when conducting electric currents. Which of the above statements are correct?
Consider the following statements: 1. Both ferromagnetic and ferrimagnetic materials have domain structures; each domain has randomly oriented magnetic moments when no external field is applied. 2. Both ferromagnetic and ferrimagnetic materials make those domains that have a favourable orientation to the applied field grow in size. 3. The net magnetic moment in ferromagnetic materials is higher than that in ferrimagnetic materials. 4. The net magnetic moment in ferrimagnetic materials is higher than that in ferromagnetic material. Which of the above statements are correct?
Which of the following ceramic materials comes under the category of traditional ceramics?
Consider the following statements regarding hysteresis loops of hard and soft magnetic materials: 1. Hysteresis loss of hard magnetic material will be less than that of soft material 2. Coercivity of hard material will be greater than that of soft material 3. Retentivity of the two materials will always be equal Which of these statements are correct?
AT Co makes a single product and is preparing its material usage budget for next year Each unit of product requires 2kg of material, and 5,000 units of product are to be produced next year Opening inventory of material is budgeted to be 800 kg and AT co budgets to increase material inventory at the end of next year by 20%.The material usage budget for next year is
Which of the following support materials in learning use the procedures of programmed Instructional Technology based on Skinner and Crowder's principles? A. Modular instructional material B. Branching programs based on material C. Linear programs based materials D. Specially prepared supplement program materials E. Lecture outlines with components of 'to reflect' and 'to do' Choose the correct answer from the options given below:
Consider the following work piece materials: i) Carbides ii) Glass iii) Copper iv) Ceramics Which of the above materials are best suited for ultrasonic Machining?