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Toughness MCQ Questions - Mechanical Behaviour & Testing of Materials

Toughness MCQs : Here you will find MCQ Questions related to "Toughness" in Mechanical Behaviour & Testing of Materials. These Toughness MCQ Questions Will help you to improve your Mechanical Behaviour & Testing of Materials knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations

Question 1

________________ is the ability of a material to absorb energy and plastically deform without fracturing

A. deformation
B. fracture
C. toughness
D. tensile

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Question 2

Toughness requires a balance of?

A. stiffness and malleability
B. strength and malleability
C. stiffness and ductility
D. strength and ductility

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Question 3

Material toughness define as?

A. amount of pressure per unit volume
B. amount of energy per unit volume
C. amount of tensile per unit volume
D. amount of energy per unit strength

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Question 4

The energy absorbed per unit volume is known as the modulus of resilience

C. Can be true or false
D. Can not say

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Question 5

Tensile toughness (or, deformation energy, UT) is measured in units of?

A. joule
B. joule per square metre
C. joule per cubic metre
D. joule per metre

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Question 6

The unit of tensile toughness can be easily calculated by using area underneath the stress–strain.

C. Can be true or false
D. Can not say

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Question 7

Which factor decreases toughness of material?

A. Alloying
B. Temperature
C. Grain refinement
D. Strain rate

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Question 8

What is the reason of low toughness of grey cast iron?

A. Strain rate
B. Notch effect
C. Grain size effect
D. Crystal structure

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Question 9

Stress intensity factor is not a function of _______

A. Loading
B. Crack size
C. Volumne
D. Structural geometry

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Question 10

Which statement is false?

A. A matrix of thermoplastic provides higher toughness than thermoset in the composite.
B. Microcracking can improve toughness in a composite
C. Copolymerization can improve the toughness of polymer
D. Tempering of martensite decreases toughness of steel

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