ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

ISRO Technician-B Welder Question Paper - 2016 (Set -1) with Answer Key

51) The presence of which of the following gases has the harmful effect of leading to cracking of a weldment?

Answer is:

Hydrogen

52) The word 'LASER' is an acronym for:

Answer is:

Light Amplification by Stimulated Emission of Radiation

53) In Gas metal arc welding, the metal transfer requiring lower current is:

Answer is:

Short circuiting transfer

54) Flux used in submerged arc welding is in the form of:

Answer is:

granular

55) The purpose of post heating of certain weld is to

Answer is:

Reduce hardness and brittleness

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