45) which of the following is not true with respect to a LASER beam welding?

Process does not require a vacuum chamber

Highly thick sections can be welded

No harmful x-rays are produced during welding

Laser beams can be focused using optical lenses and mirrors

Answer is:

Highly thick sections can be welded

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

Percussion welding

Stud welding

Acoustic welding

Answer is:

Ultrasonic welding

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

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

For more MCQ's Click Here

45) which of the following is not true with respect to a LASER beam welding?

Highly thick sections can be welded

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

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

Ultrasonic welding

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

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