Question: Copper is not present as an alloying constituent in
[A].silicon bronze
constantan
nichrome
delta metal
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
CHEMICAL ENGINEERING
Oxide layer formed on the non-ferrous metal surface after its annealing is
Question: Oxide layer formed on the non-ferrous metal surface after its annealing is
[A].removed by acid pickling.
hammered into the surface.
removed with coarse emery cloth.
left as such to protect the surface.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
Question: Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part?
[A].Anodising
Tempering
Carburising
Annealing
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Normalising of an object does not
Question: Normalising of an object does not
[A].refine coarse grain structure obtained during hot working.
improve ductility.
improve yield strength.
improve machanical properties.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Annealing of metal does not
Question: Annealing of metal does not
[A].precede its wire drawing.
induce softness and removes stresses & dissolved gases.
refine the crystalline structure & produce a definite microstructure.
alter toughness, ductility and magnetic & electrical or other physical properties.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Pearlite comprises of
Question: Pearlite comprises of
[A].87% cementite & 13% Fe.
87% ferrite & 13% cementite.
93.33% ferrite & 6.67% C.
87% ferrite & 13% C.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Eutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.
Question: Eutectoid reaction for iron-carbon system occurs at a temperature of __________ °C.
[A].597
959
1147
1493
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
Question: Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
[A].723
959
1147
1493
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Work hardening of a material
Question: Work hardening of a material
[A].decreases its tensile strength.
decreases its ductility.
increases its ductility.
does not affect its ductility.
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Carbon supply in pack carburising process is in the form of
Question: Carbon supply in pack carburising process is in the form of
[A].charcoal
calcium carbide
hydrocarbon oil
graphite
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.