Q.1
____________ favors the creep resistance of the metal.
  • a) Lower SFE
  • b) High temperature
  • c) High stress
  • d) Pre-strain
Q.2
BCC metals have ___________ stacking fault energy.
  • a) Zero
  • b) Very low
  • c) Medium
  • d) Very high
Q.3
Sherby and Burke equation shows that ___________ diffusivity and ___________ E favors low creep rate.
  • a) High, high
  • b) High, low
  • c) Low, high
  • d) Low, low
Q.4
__________ favors low creep rate.
  • a) Low E
  • b) High diffusivity
  • c) Low SFE
  • d) High stress
Q.5
When does annealed condition is preferred over cold worked condition?
  • a) At low temperature
  • b) For short holding time
  • c) Very high temperature
  • d) For medium temperature
Q.6
Which of the following elements gives a maximum increase in recrystallization temperature in Al?
  • a) Si
  • b) Mg
  • c) Cu
  • d) Mn
Q.7
Which element have the least effect on increase creep resistant in aluminum?
  • a) Mn
  • b) Fe
  • c) Cu
  • d) Cr
Q.8
Which element gives highest strain ageing effect in steel?
  • a) C
  • b) N
  • c) Mo
  • d) Al
Q.9
What is service temperature limitation for precipitation hardened alloys?
  • a) Melting temperature
  • b) Solvus temperature
  • c) Recrystallization temperature
  • d) Growth temperature
Q.10
Which compounds are widely used as second phase dispersoids?
  • a) Borides
  • b) Aluminides
  • c) Silisides
  • d) Oxides
Q.11
Sintered aluminum product can retain its strength up to about ___________
  • a) 0.2 Tm
  • b) 0.4 Tm
  • c) 0.6 Tm
  • d) 0.9 Tm
Q.12
Fine grained structure is preferred always for creep conditions.
  • a) True
  • b) False
Q.13
Quenched steel have poor creep properties.
  • a) True
  • b) False
Q.14
Which steel is preferred in creep conditions?
  • a) Normalized
  • b) Overaged
  • c) Annealed
  • d) Quenched
Q.15
Which steelmaking method gives the best creep properties?
  • a) Induction
  • b) Arc furnace
  • c) Twin hearth
  • d) Open hearth
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