Metallurgical Testing and Inspection Quiz Questions and Answers - 1
Question: 1
Most common reason for fatigue failure of materials due to
(A) Application of repeated stress
(B) Its less elasticity
(C) Its high yield point
(D) Electrochemical corrosion
Ans: A
Application of repeated stress
Question: 2
In Brinell hardness test, the measurement of the _____ is most prone to error.
(A) Diameter of indentation
(B) Surface area of indentor ball
(C) Load appliead
(D) Diameter of indentor ball
Ans: A
Diameter of indentation
Question: 3
Bend test is performed on a metal to determine its toughness. Wrap around bend test is generally used for
(A) Sheet metal
(B) Wires
(C) Tubess
(D) Round bards
Ans: B
Wires
Question: 4
Materials of construction of the indentor ball in the Brinell hardness test for hard metals is
(A) Stainless steel
(B) Tungsten carbide
(C) High carbon steel
(D) Diamond
Ans: B
Tungsten carbide
Question: 5
Decrease in stress at constant deformation under creep conditions is termed as the
(A) Stress relaxation
(B) Residual stress
(C) Proof stress
(D) Stress relief
Ans: A
Stress relaxation
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