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

Ultrasonic welding

Percussion welding

Stud welding

Acoustic welding

Answer is:

Ultrasonic welding

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

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

Ultrasonic welding

Gas welding

TIG welding

Friction welding

Answer is:

TIG welding

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

Welding speed

Welding voltage

Welding current

Electrode wire extension

Answer is:

Welding voltage

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

Friction Stir welding

Electron beam welding

Electro slag welding

Plasma welding

Answer is:

Friction Stir welding

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

Tacking at both ends of the crack

Preheating

Grooving the crack

Drilling at both ends of the crack

Answer is:

Drilling at both ends of the crack

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

For more MCQ's Click Here

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

Ultrasonic welding

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

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

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

TIG welding

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

Welding voltage

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

Friction Stir welding

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

Drilling at both ends of the crack

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