Q.1
The energy absorbed in fracture due to impact is known as _________
  • a) Static energy
  • b) Toughness
  • c) Fracture energy
  • d) Transition energy
Q.2
In which mode, the fracture surface appears to be bright and granular?
  • a) Dynamic mode
  • b) Static mode
  • c) Ductile mode
  • d) Brittle mode
Q.3
Which test is used for DBTT?
  • a) Tensile test
  • b) Charpy test
  • c) Fatigue test
  • d) Leeb test
Q.4
Which factor affects ductile brittle transition behaviour the most?
  • a) Strain rate
  • b) Temperature
  • c) Triaxiality
  • d) Notching
Q.5
With an increase in sharpness of notch, transition temperature ________
  • a) Increases
  • b) Decreases
  • c) Remains constant
  • d) First increases then decrease
Q.6
Which region is known as the initiator of brittle fracture?
  • a) High triaxial stress
  • b) Tensile stresses
  • c) Vacancies
  • d) Shear stress
Q.7
Above which temperature, fracture changes to almost totally ductile from substantially brittle?
  • a) FTP
  • b) NDT
  • c) DBTT
  • d) LSE
Q.8
Below which temperature, a material in particular a steel plate breaks?
  • b) NDT
  • c) DBTT
  • d) LSE
  • a) FTP
Q.9
What is the region between the lower shelf and the upper shelf?
  • a) Transition
  • b) Tension
  • c) Fracture
  • d) Cleavage
Q.10
Ductile to brittle transition temperature is known as ________
  • a) Upper shelf energy
  • b) Fracture transition plastic
  • c) Nil ductility temperature
  • d) Fracture appearance transition temperature
Q.11
FTP is always lower than DBTT.
  • a) True
  • b) False
Q.12
DBTT is a great concern in steels.
  • a) True
  • b) False
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