1) Chances of crack propagation are more in
a. cold working process
b. hot working process
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: cold working process
Explanation:
No explanation is available for this question!
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2) Which characteristic of material is used in forging process?
a. characteristics of elasticity of material
b. characteristics of ductility of material
c. characteristics of plasticity of material
d. none of the above
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Answer
Explanation
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ANSWER: characteristics of plasticity of material
Explanation:
No explanation is available for this question!
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3) Good surface finish and better dimensional accuracy can be achieved in
a. cold working process
b. hot working process
c. both a. and b.
d. none of the above
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Answer
Explanation
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ANSWER: cold working process
Explanation:
No explanation is available for this question!
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4) Mechanical working processes are performed on metals
a. to achieve optimum mechanical properties in the metal
b. to improve the mechanical strength of the metal
c. to make metal dense
d. all of the above
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Answer
Explanation
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ANSWER: all of the above
Explanation:
No explanation is available for this question!
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5) Hot working process is the plastic deformation of metal which is carried out
a. at temperature below the recrystallisation temperature
b. at temperature above the recrystallisation temperature
c. at temperature equals to boiling point of water
d. none of the above
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Answer
Explanation
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ANSWER: at temperature above the recrystallisation temperature
Explanation:
No explanation is available for this question!
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6) Which of the following are the cold working processes?
(1) Forging
(2) Bending
(3) Squeezing
(4) Pipe Welding
(5) Drawing
a. (1), (2) and (3)
b. (2), (3) and (5)
c. (2), (4) and (5)
d. (1), (2), (3) and (5)
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Answer
Explanation
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ANSWER: (2), (3) and (5)
Explanation:
No explanation is available for this question!
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7) Worm working or semi-hot working process, which is the plastic deformation of metal or alloy under conditions of temperature and strain rate, is performed to eliminate drawbacks of
a. cold working process
b. hot working process
c. both cold and hot working processes
d. none of the above
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Answer
Explanation
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ANSWER: both cold and hot working processes
Explanation:
No explanation is available for this question!
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8) The volume of metal that enters the rolling stand
a. should increase after rolling process
b. should decrease after rolling process
c. should remain same after rolling process
d. unpredictable
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Answer
Explanation
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ANSWER: should remain same after rolling process
Explanation:
No explanation is available for this question!
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9) How does the ability of material to withstand unpredictable loads change after forging?
a. The ability of material to withstand unpredictable loads increases after forging
b. The ability of material to withstand unpredictable loads decreases after forging
c. The ability of material to withstand unpredictable loads does not change after forging
d. Unpredictable
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Answer
Explanation
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ANSWER: The ability of material to withstand unpredictable loads increases after forging
Explanation:
No explanation is available for this question!
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10) Castings are usually
a. costlier than forgings
b. cheaper than forgings
c. at the same rate as forging for similar metal
d. none of the above
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Answer
Explanation
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ANSWER: cheaper than forgings
Explanation:
No explanation is available for this question!
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