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ISRO
ISRO Technician-B
Welder
ISRO Technician-B Welder 2017
30

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

30) Main criteria for selection of electrode in an arc welding process is

Material beign welded

Type of welding process

Thickness of material

Welding parameters used

Answer is:

Thickness of material

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

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Related ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

31) In arc welding process, the current employed is decided by

Size of the electrode

Thickness of the material

Length of weldment

Speed of welding

Answer is:

Size of the electrode

32) In manual GTAW process, the angle of the electrode holder with the direction of welding is normally

30 degree

45 degree

70 degree

90 degree

Answer is:

70 degree

33) Arc length in an arc welding process should be nearly equal to

Diameter of the electrode (d)

1.5 d

2d

3d

Answer is:

Diameter of the electrode (d)

34) The shade number of coloured glass generally used in a welding hand screen for current upto 100 A is

8 - 9

10 - 12

12 - 14

14 - 16

Answer is:

8 - 9

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

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