In Brinell hardness tester the load for aluminium is
A.300 kg
B.1500 kg
C.1000 kg
D.500 kg
E.100 kg
Category: Metallurgy Mcqs
During first charge in cupola the time taken by material to melt is approximately
A.10 minutes
B.Half an hour
C.1 hour
D.2
E.5 to 6 hours
Modulus of elasticity for steel is approximately
A.1.2 x 106 kg/cm2
B.2 x 106 kg/cm2
C.12 x 106 kg/cm2
D.52 x 106 kg/cm2
E.78 x 106 kg/cm2
The highest percentage of chrommium that can be added to steel is usually
A.12 percent
B.15 percent
C.18 percent
D.25 percent
E.50 percent
Railway rails are made of
A.Dead muld steel
B.Mild steel
C.Low carbon steel
D.Medium carbon steel
E.High carbon steel
For normalizing, steel is heated to
A.700?C
B.900?C
C.100?C below critical temperature
D.Critical temperature
E.30?C to 60?C above critical temperature
During heat treatment quenching cracks occur due to
A.irregular martensitic transformation within the article
B.oxidising atmosphere within the fumace
C.heating at higher temperatures for longer durations
D.All of the above
As per IS code, C 65 steel will have carbon percentage of
A.0.065 percent
B.0.6 to 0.7 percent
C.6 to 7 percent
D.00 to 70 percent
E.None of the above
Percentage of iron in pig iron approximately
A.99.90%
B.95%
C.90%
D.80%
E.78%
Magnetism is non-linearly related to the applied field in case of
A.Diamagnetic field
B.Paramagnetic field
C.Ferromagnetic field
D.All of the above
E.None of the above
