Fundamental of Welding Science and Technology NPTEL ANSWERS : WEEK 5 (2)

 

Fundamental of Welding Science and Technology NPTEL ANSWERS : WEEK 5

PART 2                        FOR PART 1 CLICK HERE

ASSIGNMENT 6 CLICK HERE

1 point

6. Electromagnetic force doesn’t play any role in:

 Projected metal transfer

 Rotating metal transfer

 Streaming metal transfer

 Metal transfer from filler wire

D                     LECTURE 2

1 point

7. Surface tension force is the main governing force for which of the mode of metal transfer?

 Projected metal transfer

 Rotating metal transfer

 Streaming metal transfer

 Bridging metal transfer

D                       LECTURE 2

1 point

8. In explosive metal transfer the main governing force/forces

 is electromagnetic force only

 is surface tension force only

 are electromagnetic force and chemical reactions

 are surface tension force and chemical reactions

C                    LECTURE 2

1 point

9. Projected spray metal transfer occurs

 at a current which is less than streaming spray metal transfer current

 at a current which is more than globular type metal transfer current

 at a current which is less than rotating spray metal transfer current

 all of these

D                  LECTURE 2

1 point

10. The current at which the globular metal transfer converted to spray metal transfer is called welding the 

       ‘transition current’ refers to a current at which

 transfer current

 transmission current

 transition current

 none of these           

C        (NOT SURE because of question language)    LECTURE 2

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