Lovely Professional University 2012 B.Tech Mechanical Engineering Manufacturing Technology MEC205 (Reappear/Improvement ) - Question Paper

Student Registration No.:

PNRNo/. R11121E4Z70 C?. P

Course: MEC205::MANUFACTUR!NG TECHNOLOGY

Time Allowed ;3hrs    Max.Marks: 100

1.    Th/s paper eonfctos 8 questions divided in three parts.

2.    Parts A is compulsory.

1 From PartB & Ctaken together (I*, question 3 io 8) attempt any 5 Questions out of 6.

4.    Attempt oil pertaofthe question chosen,

5.    The marks assigned to each quest/on are shown at the end of eflcft question.

6.    Answer all the questions in serial order.

Part A

Q1.a) How is a lathe specified?    |2 Marks!

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b)    What is the difference between internal broaching and external broaching?    (2 Marks)

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c)    What do you understand by OrthoQonel cutting and Oblque cutting?    (2 Marks)

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d)    What do you understand by counter sinking and counter boting?    (2 Maiks|

e)    Suggest some application of ECM    f2 Marts) 02,a) What is the difference between perherel miffing art face m*ng? (5 Marks)

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PNRNo/. R11121E4Z70 C?. P

b) Write advatages of laser beam macfining.    [5 Marks]

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6) Why welding efectrods are coated? Exptaai the function of flux?    [5 Marks]

Part B

Q3. What do you understand by indexing in milling machine? Explain Afferent methods of indexing?

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(15 Marks]

Q4. What Is Atomisation? Explain its different types with the help of diagram only.    [15 Marks]

PartC

Q5. What are the differences between automatic lathe and capstan lathe? Give an example component suited for capstan lathe with dimensions.    [15 Marks]

06. A shaper Ii operated at 120 cutting strokes per minute and is used to machine a work piece with a 250 mm fanglh and 120 mm width. Use a feed of 0.5 mm per stroke and a depth of cut of 6 mm. Cafcufete the total machining time to machine the component. The forward stroke i9 completed in 230.catcuiate the percentage of the Ume when the tool is not contacting the work place and the power in turning mild steel with a hardneei of S7SBHN. (Assume K=79*1CT*).    (13 Marks]

Q7. Explain the various parts of injection moulding machine?

06. How taper angle is calculated for turning operation? What are various methods to make a taper on lathe . machine? Explain In data#?    [15 Marks)

-End of Question Piper-

Student Registration No.:

PNRNo/. R11121E4Z70 C?. P

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Attachment: lovely-professional-university-2012-b-tech-mechanical-engineering-3036-1.jpg

Earning:   Approval pending.