QUESTIONS 1- Describe with net sketch: a. Pattern b. Riser c. Runners d. Core 2- Compare between open mold and closed mold. 3-Explain the main Procedures of Sand Casting. 4 - What are the important properties which are essential in good molding sand? Explain in details. 5- Mention advantages and disadvantages of casting. 6- Describe types of sand mold. 7- What are the common binders of sand mold and cores? 8- Describe Desirable Mold Properties. 9- Explain two types of patterns and two pattern allowances 10- Describe with sketches shell process casting (i) Composition of sand mixture (ii) Steps in molding (iii) Advantages (iv) Limitations and (v) Applications 11- Explain with Sketch the construction and operation of a hot chamber die casting machine. 12- Compare between hot chamber die casting and hot chamber die casting. 13- What is meant of investment casting? What are the main materials used for making the investment pattern. 14- Describe various kinds of patterns in use. 15- Why allowances are given on pattern? What are different types? Explain. 16- Explain with sketches four types of casting defects. 17- Explain the hot chamber die casting and write the advantages of die casting process. 18- Mention the Furnas using for melting metals process? 19- Which type of casting more suitable for making tubs and cylinders? Explain with sketches. 20- Explain the continues casting process, and what are the shapes which cane producing by continuous casting.