26) Thermit welding process

Does not use heat

Employs exothermic chemical reaction to develop high temperature

Less time consuming

None of these

Answer is:

Employs exothermic chemical reaction to develop high temperature

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

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27) In which type of welding, molten metal is poured to join the metals

GMAW

GTAW

Thermit welding

Gas welding

Answer is:

Thermit welding

28) During a metal cutting operation using an oxy-acetylene flame, the metal is cut due to

Molecular transfer

Intensive oxidation

Evaporation of metal

Burning of metal

Answer is:

Intensive oxidation

29) Welding of steel structures on-site of a building is done by

Spot welding

Arc welding

Projection welding

Thermit welding

Answer is:

Arc welding

30) Main criteria for selection of electrode in an arc welding process is

Material beign welded

Type of welding process

Thickness of material

Welding parameters used

Answer is:

Thickness of material

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

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26) Thermit welding process

Employs exothermic chemical reaction to develop high temperature

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

Related ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key

27) In which type of welding, molten metal is poured to join the metals

Thermit welding

28) During a metal cutting operation using an oxy-acetylene flame, the metal is cut due to

Intensive oxidation

29) Welding of steel structures on-site of a building is done by

Arc welding

30) Main criteria for selection of electrode in an arc welding process is

Thickness of material

ISRO Technician-B Welder Question Paper - 2017 (Set -1) with Answer Key