The chemical formula of cementite is
A.FeC
B.Fe3C
C.FeC3
D.Fe2C3
E.Fe3C2
Category: Metallurgy Mcqs
Nickel is
A.Ferromagnetic
B.Ferroelectric
C.Dielectric
D.Paramagnetic
E.None of the above
Alpha brass is a (an)
A.Inermediate phase
B.Interstitial compound
C.Substitutional solid solution
D.None of the above
A chisel for cutting steel plates is usually
A.Tempered
B.Hardened
C.Annealed
D.Tempered and annealed
E.Hardened and tempered
In anti-ferromagnetic materials the spin moments associated with two sets of atoms are aligned
A.Anti-parallel to each other
B.Parallel to each other
C.Random to each other
D.Anti-parallel but of unequal magnitudes
E.None of the above
Maximum hardness that can be achieved in plain carbon steel is of the order of
A.50 Rockwell ‘C’
B.66 – 67 Rockwell ‘C’
C.100 – 150 Rockwell ‘C’
D.80-85 Rockwell ‘C’
E.There is no such limit for hardness
Heating elements of electrical heaters are made of
A.Nichrome
B.Nicheloy
C.Invar
D.Tungsten
E.Phosphor bronze
Which of the following structure is least hard?
A.Martensite
B.Troosite
C.Pearlite
D.Sorbite
Machinability of metal depends on
A.Hardness
B.Hardness and tensile strength
C.Brittleness
D.Brittleness and toughness
E.None of the above
The percentage of carbon in cold rolled steel sheets is around
A.0.01%
B.0.10%
C.0.80%
D.1.10%
E.2.10%
