Which formation of iron is least ductile?

Which formation of iron is least ductile?
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Which formation of iron is least ductile? A. Hard steel B. Cast iron C. Mild steel D. Wrought iron
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Distortion energy theorem is not recommended for ductile materials. a) True b) False

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In which of the following case stress concentration factor is ignored? a) Ductile material under static load b) Ductile material under fluctuating load c) Brittle material under static load

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In a ductile material, the strength are (a)Firstly Ultimate >yield > elastic limit (b) Secondly Ultimate > yield =elastic limit (c) Thirdly Ultimate=yield=elastic limit (d) None

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Theories of elastic failure while dealing with ductile materials consider the failure criterion as (a) Ultimate stress (b) Yield stress (c) Both ultimate and yield stress (d) None

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A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Shear Stress Theory (b) Secondly Maximum Shear Strain Energy Theory (c) Both (a) & (b) (d) None

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A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal Strain Theory (c) Thirdly Maximum principal strain energy theory (d) None

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Last Answer : (d) None

Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

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Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

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Last Answer : (b) Brittle materials

Maximum principal strain theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Description : Maximum principal strain theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (b) Brittle materials

Maximum shear stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials

Description : Maximum shear stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials

Last Answer : (a) Ductile materials

Maximum principal stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Description : Maximum principal stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

Last Answer : (b) Brittle materials

Manganese is added in low carbon steel to A. Make the steel tougher and harder B. Raise the yield point C. Make the steel ductile and of good bending qualities D. All of the above

Description : Manganese is added in low carbon steel to A. Make the steel tougher and harder B. Raise the yield point C. Make the steel ductile and of good bending qualities D. All of the above

Last Answer : C. Make the steel ductile and of good bending qualities

Pick up the correct statement from the following: (A) A ductile material has large plastic zone (B) A brittle material has no plastic zone (C) A rigid material has no plastic zone (D) All the above

Description : Pick up the correct statement from the following: (A) A ductile material has large plastic zone (B) A brittle material has no plastic zone (C) A rigid material has no plastic zone (D) All the above

Last Answer : All the above

During a tensile test on a ductile material (A) Nominal stress at fracture is higher than the ultimate stress (B) True stress at fracture is higher than the ultimate stress (C) True stress at fracture is the same as the ultimate stress (D) None of these

Description : During a tensile test on a ductile material (A) Nominal stress at fracture is higher than the ultimate stress (B) True stress at fracture is higher than the ultimate stress (C) True stress at fracture is the same as the ultimate stress (D) None of these

Last Answer : (B) True stress at fracture is higher than the ultimate stress

The 'transition temperature' for ductile to brittle behaviour of steel increases with increase in the __________ content in steel. (A) Carbon (B) Manganese (C) Both 'a' nor 'b' (D) Neither 'a' nor 'b'

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Last Answer : (A) Carbon

__________ test is the appropriate test to determine whether a material is ductile or brittle. (A) Impact (B) Cupping (C) Hardness (D) Tensile

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Last Answer : (A) Impact

Case hardening of a material is (A) Followed by tempering or carburising (B) Preceded by its tempering (C) Done to get a soft ductile interior with a very hard surface (D) Carried out to get extreme hardness in its core

Description : Case hardening of a material is (A) Followed by tempering or carburising (B) Preceded by its tempering (C) Done to get a soft ductile interior with a very hard surface (D) Carried out to get extreme hardness in its core

Last Answer : (D) Carried out to get extreme hardness in its core