Cast iron contains
A.0.2 to 0.4% carbon
B.0.4% to 0.7% carbon
C.1 to 1.3% carbon
D.2 to 4% carbon
E.None of the above
Category: Engineering Materials Mcqs
In induction hardening
A.The voltage is high
B.The current is high
C.The frequency is high
D.The power factor is high
E.Only d.c. supply is used
If steel is quenched in water, the structure obtained is
A.Pearlite
B.Sorbite
C.Troosite
D.Acicular
E.Martensite
The product of blast furnace is known as
A.Cast iron
B.Steel
C.High carbon steel
D.Pig iron
E.Crude iron
Cheek is
A.Top surface of metal
B.Physical property of metal
C.Core of the welded joints in case of very thick material
D.Non-ferrous coating on materials
E.Intermediate flask between copes and drag
If a solid cube is subjected to equal tensile stresses on all its faces the volumetric strain is n times the linear strain, where
A.n = 1
B.n = 2
C.n = 3
D.n = 6
E.n = 9
Which process is used for machining parts to planned dimensions?
A.Routing
B.Shearadising
C.Electroforming
D.Swaging
E.Anodizing
Which of the following is incorrect for diamond?
A.An allotrope of graphite
B.Insoluble in all solvents
C.White in colour
D.Densest form of carbon
E.Transparent
Aluminium alloys for pressure die casting
A.Must possess considerable fluidity
B.Must not be free from hot shortness
C.Must have iron as one of the constituents
D.Must be light
E.None of the above
Cold work is done on the metal
A.Below the thermal critical range
B.Above the thermal critical range
C.At zero degree centigrade temperature
D.After slightly warning the metal in furnace
E.None of the above
