Iron alloyed with carbon more than 2% is called
A.Cast iron
B.Mild steel
C.Carbon steel
D.High carbon steel
E.Alloy steel
Category: Engineering Materials Mcqs
Blast furnace gas is
A.A flue gas discharged to atmosphere
B.Highly poisonous
C.Used as fuel in a blast furnace
D.A by-product of blast furnace
E.Used as a cooking gas
Shot blasting is the process for the cleaning of
A.Moulding sand
B.Cores
C.Castings
D.Pattern
E.Welded components
Metal spinning
A.Is done at low speeds
B.Is done on unsymmetrical articles
C.Is done on symmetrical articles
D.Does not require dies
E.Utilises point hard tools
In fibre glass reinforced plastics, the glass fibres are primarily used to improve
A.Mechanical properties of plastics
B.Electrical properties of plastics
C.Thermal properties of plastics
D.Surface properties of plastics
E.None of the above
A steel having ferrite and pearite is
A.Soft
B.Hard
C.Ductile
D.(A) and (B) above
E.(A) and (C) above
If steel is cooled in still air, the structure obtained is
A.Pearlite
B.Sorbite
C.Troosite
D.Acicular
E.Martensite
Nichrome are alloys of
A.Nickel, chromium
B.Nickel, chromium and copper
C.Nickel, chromium and silver
D.Nickel, chromium and aluminium
E.Nickel, chromium and iron
Brinell hardness number for nitrided steel is in the range
A.60 to 80
B.100 to 150
C.200 to 300
D.300 to 450
E.700 to 800
Which of the following is donor impurity for semi-conductors?
A.Antimony
B.Aluminium
C.Boron
D.Indium
E.Callium
