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ISRO Technician-B
Blacksmithy
ISRO Technician-B Blacksmithy 2019
27

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

27) Quenching refers to

Heating in oil

Cooling in oil

Applying oil on surface

Removal of oil

Answer is:

Cooling in oil

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

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

28) The steel is heated to austenising temperature and held at the temperature for sufficient time. This process of holding at higher temperature in furnace is called

Annealing

Tempering

Soaking

Hardening

Answer is:

Soaking

29) Brass is an alloy of _ and _

Copper, tin

Copper, aluminium

Copper, zinc

Copper, lead

Answer is:

Copper, zinc

Explanation:

Brass is an alloy of Copper and zinc

30) Sum of square of first 10 natural numbers is

385

3025

55

770

Answer is:

385

31) A 20 ton press means

Weight of press is 20 ton

Press can handle work up to 20 ton

Press can exert pressure up to 20 ton

Foundation of press is designed for 20 ton

Answer is:

Press can exert pressure up to 20 ton

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

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