Exercise: Engineering Materials

Questions for: Engineering Materials

According to Indian standard specifications, a plain carbon steel designated by 40 C8 means that the carbon content is
A:
0.04%
B:
0.35 to 0.45%
C:
0.4 to 0.6%
D:
0.6 to 0.8%
Answer: B
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When filing or machining cast iron makes our hands black, then it shows that __________ is present in cast iron.
A:
cementite
B:
free graphite
C:
D:
Answer: B
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Gamma-iron occurs between the temperature range of
A:
400°C to 600°C
B:
600°C to 900°C
C:
900°C to 1400°C
D:
1400°C to 1530°C
Answer: C
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The portion of the blast furnace below its widest cross-section is called
A:
hearth
B:
stack
C:
bosh
D:
throat
Answer: C
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Beryllium bronze contains
A:
60% copper and 40% beryllium
B:
80% copper and 20% beryllium
C:
97.75% copper and 2.25% beryllium
D:
99% copper and 1% beryllium
Answer: C
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