Exercise: Engineering Materials

Questions for: Engineering Materials

The quenching of steel from the upper critical point results in a fine grained structure.
A:
Agree
B:
Disagree
C:
D:
Answer: A
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The hardness and tensile strength in austenitic stainless steel can be increased by
A:
hardening and cold working
B:
normalising
C:
martempering
D:
full annealing
Answer: A
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Closed packed hexagonal space lattice is found in
A:
zinc, magnesium, cobalt, cadmium, antimony and bismuth
B:
gamma-iron, aluminium, copper, lead, silver and nickel
C:
alpha-iron, tungsten, chromium and molybdenum
D:
none of the above
Answer: A
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A material is said to be allotropic, if it has
A:
fixed structure at all temperatures
B:
atoms distributed in random pattern
C:
different crystal structures at different temperatures
D:
any one of the above
Answer: C
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The ability of a material to absorb energy in the plastic range is called
A:
resilience
B:
creep
C:
fatigue strength
D:
toughness
Answer: D
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