55) The purpose of post heating of certain weld is to

Reduce hardness and brittleness

Increase hardness and brittleness

Reduce the toughness

Increase the cooling rate

Answer is:

Reduce hardness and brittleness

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

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56) For welding overhead joints in a horizontal plane, the techniqu e of gas welding is:

Forehand

Back hand

Straight hand

Inclined hand

Answer is:

Back hand

57) In a gas welding using oxygen and acetylene cylinders, the pressure of gas is more in:

Oxygen cylinder

Acetylene cylinder

Equal in both cylinder

depends on material to be weld

Answer is:

Oxygen cylinder

58) In resisttance welding, when the current passes through the metal, the greatest resistance is

at the surface

through the metals to be welded

at the point of contact of the metal to be welded

at the point where electrode contacts the metal

Answer is:

at the point of contact of the metal to be welded

59) Which of the following material is difficult to be spot welded?

Cold rolled MS sheet

Hot rolled MS sheet

Stainless sheet

Copper

Answer is:

Copper

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

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55) The purpose of post heating of certain weld is to

Reduce hardness and brittleness

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

56) For welding overhead joints in a horizontal plane, the techniqu e of gas welding is:

Back hand

57) In a gas welding using oxygen and acetylene cylinders, the pressure of gas is more in:

Oxygen cylinder

58) In resisttance welding, when the current passes through the metal, the greatest resistance is

at the point of contact of the metal to be welded

59) Which of the following material is difficult to be spot welded?

Copper

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