Hot hardness means that the material will lose its hardness at high temperature. True or false and recorrect if false.

Q: Which of the following material has minimum Indentation diameter? Select one: Mildsteel Aluminium…

A: As we know that,  Brinell hardness no. (BHN)∝ 1Indentation area (or Indentation dia.)

Q: The property of breaking without much permanent distortion is Ductility. Select one: O True O False

A: Since you have Multiple Independent questions we will solve the first question for you To get the…

Q: A ductile material will not yield at all, when it is subjected to external loading Select one: True…

A: if ductile material is subjected to external loading then after a certain pt. the material will…

Q: Discuss the following terms. a) Resilience. b) Proof resilience. ( c) Modulus of resiliene

A:

Q: The Factor of safety is the ratio of yield stress to the permissible stress for Brittle Material…

A: Factor of safety: The factor of safety for Brittle material is defined as the ratio of the ultimate…

Q: A test that involves pressing a steel or carbide ball of 10mm against a surface with various loads.…

A: 1 . option [ b ] is correct because in Brinell hardness test generally 10 mm steel ball to press the…

Q: Alumina possess high strength at high temperatures? Select one: O True False

A: Alumina(Aluminium oxide,Al2O3) is ore of Aluminium metal. Aluminium is produced by heating alumina .…

Q: Explain key assumptions in the theory of simple stress. Explain different parts of a characteristic…

A: Key assumptions in the theory of simple stress. 1) The material of the beam is homogeneous  2) It…

Q: Q2: Hooke's Law can be used in which region of the stress-strain diagram? Elastic Necking Inelastic…

A:

Q: If external loads applied to metals, how do it's respond? (Draw and show in figure

A: The response when external loads are applied on the metals

Q: Based on Figure Q10, the LOWEST toughness belongs to

A: Toughness is the ability of the material to withstand shock load. And toughness is…

Q: Answer with true (T) or false (F), corrects the wrong phrases, and gives short reason(s) for correct…

A: Given questions:   1. Normalized steels have better strength and toughness as compared as annealed…

Q: What happens when stress exceeds stra O The material will go back to normal O The material will stay…

A: When the stress exceeds the strain the material beguns to yield permanently and at last the material…

Q: 12. True or false? In Brinell hardness test, the depth of indentation must not be too great relative…

A: Given that  True or false? In Brinell hardness test, the depth of indentation must not be too great…

Q: Which choice below describes the mechanical property materials called toughness a ability to…

A: Which choice below describes the mechanical property materials called toughness a ) ability to…

Q: Which one of the following is the correct definition of ultimate tensile strength, as derived from…

A:

Q: Which of the materials depicted in the graph: (Answer with Letter ONLY) A B Ductility Toughest Most…

A:

Q: Differentiate between the fatigue test and tensile test.

A: On the basis of Tensile Test Fatigue Test Determination For determining the specimen…

Q: Draw shear force and bending momenE

A:

Q: In a tensile test of mild steel strain at failure is high Select one: True False

A: Solution:

Q: Forces generated in a material in reaction to the applied compressive forces are an example of…

A: Solution:

Q: choose true or false : -The ratio of linear stress to linear strain is called Modulus of elasticity.

A:

Q: The dilatation is a measure of volumetric strain.True or false?

A: volumetric strain-It is defined as the ratio of the change in volume to the original volume.…

Q: Q3. If external loads applied to metals, how do it's respond? (Draw and show in figure).

A: If external loads applied to metals how do it's respond

Q: The resistance of a material to deflection is called

A: Answer (d) Rigidity is correct option.

Q: It is a a condition where in the a material will cause deformations even a minimal stress is apply…

A: Given question: It is a a condition where in the a material will cause deformations even a minimal…

Q: The ratio of decrease in length to the original length is known as compressive strain. Select one:…

A:

Q: نقطة واحدة .The strength constant (C) is increased with increasing of temperature True False The…

A: The strength constant C is increasing of temperature. True or False          Note :- You are posting…

Q: Which of the following is/are TRUE? OEdge and screw dislocations lower the required shear stress for…

A: The reduction in area in low carbon steel is expressed as, Thus, a reduction in area is…

Q: Necking in cast iron is seen when it is subjected to a tensile test. Select one: O True O False

A:

Q: In a stress strain curve of mild steel, the elastic limit will be before the limit of…

A: In the stress strain curve for the mild steel the elastic limit is the second point which comes…

Q: The property of breaking without much permanent distortion is Ductility. Select one: True False

A: The property of breaking without much permanent distortion is known as the brittleness and the…

Q: a) Draw stress-strain curves for mild steel and TOR steel b) Proportional Limit or Elastic Limit

A:

Q: When hardness is measured under dynamic loading conditions , it is known as hardness

A: When hardness is measured under dynamic loading conditions , it is known as hardness

Q: the hardness of

A: Given; During heat treatment of steel, the hardness of various structures in increasing order is,…

Q: tensile strength

A: when weight and energy is the criterion for design the then required material having high tensile…

Q: At room temperature, mild steel is a ductile material. True or false?

A: At room temperature the mild steel is ductile material. A ductile material shows liner relationship…

Q: Tensile and Compressive forces are indirect forces Select one: O True O False

A: There are two types of forces: 1.direct forces 2.indirect forces

Q: Structural steel is a brittle material, which means that it cannot undergo large amount of plastic…

A: Structural steel: Steels are the alloys of the iron and carbon majorly, but there are other elements…

Q: Material A is tested by Brinell hardness test with 500 kg force, and has hardness OL. Material A O…

A: Given Data⇒ Brinell hardness test : BHN=107 Rockwell hardness test : HRA=42.5

Q: If the Vicker’s hardness number (HVN) is 350 N/mm2, how much load was applied on the test specimen…

A:

Q: Which of the following statement(s) is/are correct? i. The area under stress-strain curve gives…

A: The total area under stress strain curve is called toughness. As in (i) it is not mentioned that up…

Q: Stress is determined as the product of the Young’s modulus multiplied by the Strain

A:

Q: Toughness is the property of a metal find by test. a. Tensile b. Creep O c. Impact С. d. Hardness

A: Charpy V notch impact test  Izod test  KIC test These tests measure the toughness of the metal.

Q: Which would be the most likely to measure for an inflated baloon? A. Shear modulus b  bulk modulus…

A: Which would be most likely to measure for an inflated balloon....... First and foremost what is…

Q: Ductile materials have more impact strength compared to brittle materials. Select one: True False

A: Ductile materials have more impact strength compared to brittle materials:

Q: 8) 2.Recrystallization is followed by decrease in strength and hardness. Select one: True False

A: Recrystallisation:  It is a process in which the deformed grains are replaced by a new set of grains…

Q: Young's modulus of material will be high for a stiffer material. Select one: True False

A: Higher the value of slope, higher is the Young's modulus and stiffness. Thus, stiffness is directly…

Q: Young's modulus is a very important mechanical property that can be directly measured by Vickers's…

A: Dear student,                     According to the guidelines I am allowed to answer only one…

Q: Austenite (y) is soft, tough and high ductile True O False

A: When alpha iron heated then phase transformation occurrs from BCC to FCC. This FCC gamma iron is…

Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.