15) A round bar of 50mm is forged to hexagon. Width across flat is

35.36 mm

43.3 mm

50 mm

57.7 mm

Answer is:

43.3 mm

ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key

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16) A billet of length 500mm, width 300mm and thickness 50mm is rolled keeping its width constant. What will be the thickness of the billet if length after rolling is 800mm?

18.75 mm

31.25 mm

20 mm

62.5 mm

Answer is:

31.25 mm

17) Purpose of gate in casting is

Deliver molten metal into the mould cavity

Act as reservoir for the molten metal

Feed the molten metal to the casting in order to compensate for shrinkage

Deliver molten metal from pouring basin to gate

Answer is:

Deliver molten metal into the mould cavity

18) How much time will it take for an amount of Rs.450 to yield Rs.81 as interest at 4.5% per annum of simple interest?

3.5 years

4 years

4.5 years

5 years

Answer is:

4 years

19) The operation of cutting cylindrical scrap in a sheet metal is called

Shearing

Piercing

Punching

Blanking

Answer is:

Piercing

ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key

For more MCQ's Click Here

15) A round bar of 50mm is forged to hexagon. Width across flat is

43.3 mm

ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key

Related ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key

16) A billet of length 500mm, width 300mm and thickness 50mm is rolled keeping its width constant. What will be the thickness of the billet if length after rolling is 800mm?

31.25 mm

17) Purpose of gate in casting is

Deliver molten metal into the mould cavity

18) How much time will it take for an amount of Rs.450 to yield Rs.81 as interest at 4.5% per annum of simple interest?

4 years

19) The operation of cutting cylindrical scrap in a sheet metal is called

Piercing

ISRO Technician-B Blacksmithy Question Paper - 2019 (Set-1) with Answer Key