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Engineering Materials
Comments
Question
The charge is fed into the blast furnace through the
Options
A. stack
B. throat
C. bosh
D. tuyers
Correct Answer
throat
Engineering Materials problems
Search Results
1. Which of the following process of steel making is in operation at Tata Iron and Steel Works, Jamshedpur?
Options
A. Bessemer process
B. Open hearth process
C. Duplex process
D. Electric process
Show Answer
Scratch Pad
Discuss
Correct Answer: Duplex process
2. The hardness is the property of a material due to which it
Options
A. can be drawn into wires
B. breaks with little permanent distortion
C. can cut another metal
D. can be rolled or hammered into thin sheets
Show Answer
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Discuss
Correct Answer: can cut another metal
3. A material is said to be allotropic, if it has
Options
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
Show Answer
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Discuss
Correct Answer: different crystal structures at different temperatures
4. The unit cells
Options
A. contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal
B. have the same orientation and their similar faces are parallel
C. may be defined as the smallest parallelopiped which could be transposed in three coordinate directions to build up the space lattice
D. all of the above
Show Answer
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Discuss
Correct Answer: all of the above
5. The hardness and tensile strength in austenitic stainless steel can be increased by
Options
A. hardening and cold working
B. normalising
C. martempering
D. full annealing
Show Answer
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Discuss
Correct Answer: hardening and cold working
6. The steel produced by bessemer or open hearth process is __________ to that produced by L-D process.
Options
A. superior
B. inferior
Show Answer
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Discuss
Correct Answer: inferior
7. Nodular cast iron is produced by adding __________ to the molten cast iron.
Options
A. nickel
B. chromium
C. copper
D. magnesium
Show Answer
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Discuss
Correct Answer: magnesium
8. Silicon when added to copper improves
Options
A. machinability
B. hardness
C. hardness and strength
D. strength and ductility
Show Answer
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Discuss
Correct Answer: hardness and strength
9. The hardness of steel increases if it contains
Options
A. pearlite
B. ferrite
C. cementite
D. martensite
Show Answer
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Discuss
Correct Answer: cementite
10. Brass is an alloy of
Options
A. copper and zinc
B. copper and tin
C. copper, tin and zinc
D. none of these
Show Answer
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Discuss
Correct Answer: copper and zinc
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