Download DBATU B.Tech 2019 March 3rd Semester Manufacturing Process Question Paper

DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY, LONERE

Mid Semester Examination – March 2019

Course: B. Tech in Mechanical Engineering Sem: III

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Subject Name: Manufacturing Process-I Subject Code: BTMEC401

Max Marks: 20 Date: 11/3/2019 Duration: 1 Hr.

Instructions to the Students:

1. Assume suitable data wherever required.
2. Draw figure wherever necessary.

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3. Figure to right indicates full marks.

Q. 1 Solve all the Multiple Choice Questions (Level/CO) Marks 1 X 6=6

1. In casting, which of the following furnace is NOT used Knowledge/CO1

   1. Puddling Furnace
   2. Crucible Furnace

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   3. Cupola Furnace
   4. Induction Furnace

2. Which of the following casting process is known as counter gravity casting? Knowledge/ CO1

   1. Slush casting

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   2. Vacuum casting
   3. Investment casting
   4. Sand casting

3. Defect in casting includes Knowledge/ CO1

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   1. Hot tearing
   2. Cold tearing
   3. Chatter
   4. All of the above

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4. Which of the following is NOT the rolling process Knowledge/ CO2

   1. Shape rolling
   2. Thread rolling
   3. Ring rolling
   4. Shell rolling

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5. On small scale, mills which utilizes scrap material and that is melted in electric-arc furnaces, cast, and continuously rolled into specific lines of products is known as Knowledge/ CO2

   1. Two high mill
   2. Three high mill
   3. Four high mill

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   4. Minimills

6. Extrusion ratio is Knowledge/ CO2

   1. ratio of the cross-sectional area of the billet to that of the extruded product
   2. ratio of the cross-sectional area of the extruded product to that of the billet

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Q.2 Solve Any Two of the following. Comprehension/ 3 X 2=6

1. What is the difference between expandable mold & permanent mold? Enlist various types of casting process.
2. Explain any one process out of ring rolling or shape rolling. Comprehension/ CO2
3. Which are the three principal extrusion defects? Comprehension/

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Q.3 Solve Any One of the following. Application/CO2 1 X 8=8

1. What is difference between hot chamber & cold chamber die casting? Explain any one process briefly.
2. How many types of mills can be used for rolling? Explain all of them with illustration.

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