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

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.'

. @@@@

GNDEC M.Tech PE Dec 2007 Welding Technology.pdf

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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