3. (Slow or Fast, which one? – Circle one) cooling rates results in coarse dendritic structures.4. The higher the viscosity of the melt, the .its fluidity?5. Name 3 defects in casting:6. Internal or externalare an effective means of reducing shrinkage porosity during solidification.7. Is green-sand molding expensive?8..... are inserts placed in the molds to form the hollow regions in casting.9. The method of casting turbine blades:Sample A10. Which one has higher stiffness? Sample A or Sample BSample B11. Which one has higher toughness? Sample A or Sample B12. Which one has higher strength? Sample A or Sample B13. Which one has higher ductility? Sample A or Sample14. Higher......... means more rigidity.Strain15. Before the no-slip point, the velocity is (higher or lower, which one? - Circle one)16. In flat-rolling process, using smaller diameter rolls (increases or decreases, which one? - Circle one) the rollforce.17. Balls for ball bearings can be made byrolling of round wires or rods fed into the roll gap.18.rolling is a cold-forming process to produce screws.19. Are money coins made by Closed-die or Open-die forging (Circle one).20. Built-Up Edge (BUE) accumulates ona. Flank faceb. Rake facec. Side face21. In orthogonal turning, increasing the positive rake angle, will:a. Reduce forcesb. Reduce temperatures c. Premature tool chippingd. all of them22. To avoid BUE:a. Increase cutting speedb. Increase depth of cutc. Decrease rake angle.Stress

Answer (3) Slow Explanation For slower rate of cooling coarser grain obtained.

Answered: (Slow or Fast, which one? – Circle one)…

(Slow or Fast, which one? – Circle one) cooling rates results in coarse dendritic structures. | The higher the viscosity of the melt, the its fluidity? Name 3 defects in casting:

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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