Paper ID [PE504) (Please fill this Paper ID in OMR Sheet)
M. Tech. .
WELDING TECHNOLOGY (PE - 504)
Time: 03 Hours
Maximum Marks:
100
.
Instruction to Candidates: 1) 2)
Attempt any Five questions. All questions carry equal marks.
Ql) What do you understand by solidification mechanism. Explain Epitaxial solidification. Q2) What should be the basic characteristics of a power source used for arc weldingExplain a thyristor controlled rectifier. Q3) What are coated electrodes. Discuss the role of flux ingyadientsand shielding
gases.on electrodes.
.
.Q4) What'is cold pressure welding. Discuss the mechanism of cold pressure welding. Write the limitations of cold pressure Welding. ' ""
.
Q5) What is arc blow. Discuss the mechanism of arc blow. Write the effects and . remedies of arc blow. . . Q6) What is meant by metal transfer. Explain the mechanism 'of free-flight metal transfer.
.
Q 7) Discuss the principle of operation of GMAW process. Write the advantages and disadvantages also. Q8) Wri~enotes on: (a) Heat affected zone. (b) Weldability.'
Page 1 of 60. r . Roll Xo. ...................... z- t?Total Xo. of Questions : 08] [Total Xo. of Pages.: 01. Paper ID [PE504). (Please fill this Paper ID in OMR Sheet). M.Tech. . WELDING TECHNOLOGY (PE - 504). Time: 03 Hours. Instruction to Candidates: . 1) Attempt any Five questions. 2) All questions carry equal marks. Maximum ...
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Describe the solidification mechanism occurred in fusion. ofweldments? (b) Explain the effects of alloying of various elements on welding of carbon. alloy steel? Q2) Define welding arc? Explain the mechanism of arc initiation and itsmaintenance? Q3)
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