Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January ME 5th Sem 78249 Manufacturing Process Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.T ech. (Mechanical Engineering) (Sem.?5)
MANUFACTURING PROCESS
Subject Code : BTME-503-18
M.Code : 78249
Time : 3 Hrs. Max. Marks : 60
INST RUCT ION TO CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1)
Enlist the parameters on which solidification time depends in metal casting.
2)
What are the specific merits of cold working over hot working?
3)
Define the term surface integrity.
4)
Differentiate between Trimming and shaving shearing operations.
5)
Distinguish between brazing and soldering.
6)
What is meant by rapid tooling?
7)
Briefly explain about FDM used in additive manufacturing.
8)
Discuss the effect of amplitude and frequency of vibration on surface finish obtainable in
ultrasonic machining.
9)
List reasons for the development of unconventional machining processes.
10) What should be the properties of maskants?
SECTION-B
11) What are the essential conditions that are to be kept in mind while designing risers?
Compare the modulus method with that of Caine's method of fixing riser dimensions.
12) What are the types of cutting tool wear patterns observed in single point tools? How do
they affect the metal cutting performance? How do you define the tool life? Explain the
parameters that control the tool life of a single point cutting tool.
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13) What is meant by liquid-state welding? Explain the basic principle of arc welding
processes. Why is the quality of submerged arc welding very good? Why is the flux not
needed in tungsten-arc welding?
14) Describe briefly the factors that influence the quality of cut in Plasma Arc Machining
(PAM). Discuss the process capabilities of Electron Beam Machining (EBM).
15) What is the difference between jig and fixture? What are different types of fixtures?
Enumerate the different applications for jigs and fixtures.
SECTION-C
16) a) a. Describe briefly about cluster rolling mill. What is the advantage of tandem
rolling? What factors contribute to spreading in flat rolling? Explain some defects
that can be present in rolled products.
b. Why is investment casting process capable of producing fine surface detail on
castings? Explain with suitable sketch.
b) a. Describe briefly about cluster rolling mill. What is the advantage of tandem
rolling? Explain some defects that can be present in rolled products.
b. Why is investment casting process capable of producing fine surface detail on
castings? Explain with suitable sketch.
17
a) a. What is meant by solid-state welding? Explain the principle underlying the seam
welding process. What are the faying surfaces in solid-state welding processes?
b. Discuss in detail the principles and other important parameters need to be
considered during forging die design.
b) a. What is meant by solid-state welding? Explain the principle underlying the seam
welding process. What are the faying surfaces in solid-state welding processes?
Enlist the names of products wherein this process is used.
b. Discuss in detail the principles and other important parameters need to be
considered during forging die design.
18) What is the principle of electrochemical machining (ECM)? Describe the chemistry
involved in the ECM process. Enlist the elements of ECM process with a suitable sketch.
What are the materials commonly used for making a tool for use in this method? What
are the functions of an electrolyte?
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 26 June 2021