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Mechanical Behaviour Testing Materials
Mechanical Behaviour Multiple Choice
Quiz 1
Solution
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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