30) The welding process widely employed to weld railway rails is:

Thermit welding

Percussion welding

Ultrasonic welding

Explosive welding

Answer is:

Thermit welding

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

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31) In gas tungsten arc welding, the shape of the tip of tungsten electrode used for welding of aluminium is

Point end

Flat end

Angular end

Spherical end

Answer is:

Spherical end

32) In SMAW, bead width and height will be more if:

welding current is decreased

electrode angle is decreased

welding speed is decreased

arc length is decreased

Answer is:

welding speed is decreased

33) Which of the following carbon steels is most weldable?

0.15% Carbon steel

0.30% Carbon steel

0.5% Carbon steel

0.75% Carbon steel

Answer is:

0.15% Carbon steel

34) Straight polarity welding refers to:

Electrode holder is connected to negative and work to the positive

Holder connected to positive and work to negative

Holder is positive and work is earthed

Work is positive and holder is earthed

Answer is:

Electrode holder is connected to negative and work to the positive

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

For more MCQ's Click Here

30) The welding process widely employed to weld railway rails is:

Thermit 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

31) In gas tungsten arc welding, the shape of the tip of tungsten electrode used for welding of aluminium is

Spherical end

32) In SMAW, bead width and height will be more if:

welding speed is decreased

33) Which of the following carbon steels is most weldable?

0.15% Carbon steel

34) Straight polarity welding refers to:

Electrode holder is connected to negative and work to the positive

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