Engineering Materials - Study Mode

[#116] The cupola is used to manufacture
Correct Answer

(B) Cast iron

Explanation

Solution: A cupola or cupola furnace is a melting device used in foundries that can be used to melt cast iron

[#117] Tungsten in high speed steel provides
Correct Answer

(A) Hot hardness

Explanation

Solution: Tungsten is a good carbide former that prevents grain growth, enhances toughness and increases red hardness and high temperature strength. Tungsten is used in hot forming tool steels and high-speed steels.

[#118] 1841 high speed steel contains
Correct Answer

(B) Vanadium 1%, chromium 4% and tungsten 18%

Explanation

Solution: 1841 high speed steel contains Vanadium 1%, chromium 4% and tungsten 18%

[#119] The machinability of steel is improved by adding
Correct Answer

(D) Sulphur, lead and phosphorus

Explanation

Solution: The machinability of steel is improved by adding Sulphur, lead and phosphorus

[#120] Nodular cast iron is produced by adding ________ to the molten cast iron.
Correct Answer

(D) Magnesium

Explanation

Solution: Nodular cast iron is produced by adding magnesium to the molten cast iron.