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

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

46) Which of the following welding process utilizes high frequency acoustic vibrations to generate heat and create a weld?

Answer is:

Ultrasonic welding

47) Which of the following welding process is not generally employed for welding of plastics?

Answer is:

TIG welding

48) The arc length in a submerged arc welding process is controlled by

Answer is:

Welding voltage

49) The edges of thick cylindrical sections can be welded without any edge preparation by

Answer is:

Friction Stir welding

50) While repair welding a crack in a cast iron body, the extension of crack can be controlled by:

Answer is:

Drilling at both ends of the crack

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