Multiple Choice Questions On Manufacturing Process and Production Engineering
16. A cylindrical section having no joints is known as.......
A.Seamless
B.Ideal
C.Economical
D.Perfect
E.Jointless
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A.Seamless
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17. Hard working operation is carried at.......
A.Recrystallisation temperature
B.Near plastic stage tepmerature
C.Below recrystallisation temperature
D.Above recrystallisation temperature
E.Above room temperature
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18. The increase in hardness due to cold working is called.........
A.Cold hardening
B.Hot hardening
C.Work hardening
D.Age-hardening
E.Induction hardening
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19. An important product manufactured by rolling is......
A.I-section
B.Tubes
C.Metal rolls
D.Rollers
E.Discs
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20. The important mechanical property of a material for extrusion purposes is.......
A.Continuity
B.Ductility
C.Elasticity
D.Plasticity
E.Brittleness
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