Description : On inspecting a completed weld which has charpy impact requirements some small, smooth, shallow areas of undercut have been found
Last Answer : d) Only allow the welder to cosmetically blend out the undercut
Description : __________ test is the appropriate test to determine whether a material is ductile or brittle. (A) Impact (B) Cupping (C) Hardness (D) Tensile
Last Answer : (A) Impact
Description : Which of the following is not a characteristic observed in material failure by fatigue fracture? (A) Plastic deformation of material does not occur (B) Initiation of crack from below the surface does ... (D) Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface
Last Answer : Option B
Description : Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?
Last Answer : For ductile materials, theories of failure used are maximum shear stress theory, and maximum energy of distortion theory; while for brittle materials, theory of maximum principal stress, and maximum strain are used.
Description : The materials which fracture even at small strains are termed as brittle, while those materials which exhibit an appreciable deformation before failure are termed as (A) Rigid (B) Tough (C) Ductile (D) Plastic
Last Answer : Option C
Description : Which Theories Of Failure Are Used For? (a) Ductile Materials (b) Brittle Materials?
Last Answer : For ductile materials, theories of failure used are maximum shear stress theory and maximum energy of distortion theory; For brittle materials, the theory of maximum principal stress and maximum strain are used.
Description : The material in which large deformation is possible before absolute failure by rupture takes place, is known as (a) Ductile (b) Plastic (c) Brittle (d) Elastic
Last Answer : Ductile
Description : . __________ test can be termed as the semi-destructive test. (A) Impact (B) Torsion (C) Hardness (D) Charpy
Description : Which of the following in NOT a quantitative test? a) Root bend b) Macro hardness c) Charpy d) Tensile
Last Answer : a) Root bend
Description : The substance which break just after elastic limit: a) Ductile b) Brittle c) Soft d) Hard
Last Answer : d) Hard
Description : 'Shock-absorbers are usually made of steel as it – (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property
Last Answer : (3) has higher elasticity Explanation: A shock absorber is a mechanical device designed to smooth out or damp shock impulse, and dissipate kinetic energy. Steel is an alloy made by combining iron and other elements, the most common of these being carbon.
Description : List at least two factors that promote transition from ductile to brittle fracture.
Last Answer : Manner of loading, and the rate of loading promote transition from ductile to brittle frac¬ture. A machine member may have ductile failure under static loading but may fail in brittle fashion when the ... testing speed but if load is applied at a high velocity then failure may be brittle.
Description : Polystyrene is a __________ plastic at room temperature. (A) Ductile (B) Brittle (C) Malleable (D) None of these
Last Answer : (B) Brittle
Description : Zinc is highly __________ at room temperature. (A) Ductile (B) Resistant to atmospheric corrosion (C) Malleable (D) Brittle
Last Answer : (B) Resistant to atmospheric corrosion
Description : A material capable of undergoing large permanent deformation, when subjected to compression is termed as (A) Malleable (B) Ductile (C) Brittle (D) None of these
Last Answer : (A) Malleable
Description : Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable
Last Answer : (A) Brittle
Description : . A material capable of undergoing large permanent deformation, when subjected to tension is termed as (A) Friable (B) Ductile (C) Brittle (D) None of these
Last Answer : (B) Ductile
Description : Substances that elongate considerably and undergo plastic deformation before they break are known as A. brittle substances B. breakable substances C. ductile substances D. elastic substances
Last Answer : ductile substances
Description : 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
Last Answer : a) Ductile material under static load
Description : Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None
Last Answer : (a) Ductile materials
Last Answer : (b) Brittle materials
Description : Maximum principal strain theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None
Description : Maximum shear stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials
Description : Maximum principal stress theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None
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
Description : Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough
Last Answer : (C) Brittle
Description : 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'
Last Answer : (A) Carbon
Description : A dense structure of grinding wheel is not used for the (A) Ductile material (B) Hard materials (C) Brittle materials (D) Finishing cuts
Last Answer : A) Ductile material
Description : What Is Ductile-brittle Transition Temperature?
Last Answer : It is the temperature below which the tendency of a material to fracture increases rather than forming. Below this temperature the material loses its ductility. It is also called Nil Ductility Temperature
Description : List At Least Two Factors That Promote The Transition From Ductile To Brittle Fracture?
Last Answer : The manner of loading and the rate of loading promote the transition from ductile to brittle fracture. A machine member may have ductile failure under static loading but may fail in brittle fashion when the ... testing speed, but if the load is applied at a high velocity then failure may be brittle.
Description : Distinguish Between Brittle Fracture And Ductile Fracture?
Last Answer : In brittle fracture, crack growth is up to a small depth of the material. In ductile fracture large amount of plastic deformation is present to a higher depth.
Description : The substance which undergo plastic deformation until break is a) Brittle b) Ductile c) Hard d) Soft
Last Answer : d) Soft
Description : Which stress strain curve is more steep (a) For a ductile material (b) For a brittle material (c) For a pure metal (d) None
Last Answer : b) For a brittle material
Description : 'Shock-absorbers' are usually made of steel as it : (1) is not brittle (2) has lower elasticity (3) has higher elasticity (4) has no ductile property
Last Answer : has higher elasticity
Description : Define factor of safety for ductile and brittle material.
Last Answer : Factor of safety for ductile material: It is defined as ratio of yield stress to the working stress or Factor of safety for Brittle material : It is defined as ratio of ultimate stress to the working stress /permissible /design stress or
Description : Sedimentary rocks are-----? A. Porous (Answer) B. Hard C. Rough D. Brittle E. Volcanic
Last Answer : A. Porous (Answer)
Description : _____ is a surface fatigue failure which occurs when the load on the bearing part exceeds the surface endurance strength of the material. (a) Scoring (b) Pitting (c) Corrosion
Last Answer : (b) Pitting
Description : Temper brittleness of a material can be fairly detected by the __________ test. (A) Fatigue (B) Notched bar impact (C) Tensile (D) Hardness
Description : I'm about to begin editing the rough draft of my first completed novel. Any advice?
Last Answer : Make sure you capitalized the first letter of the first word in every sentence.
Description : 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
Last Answer : (b) Yield stress
Description : 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
Last Answer : (c) Both (a) & (b)
Description : 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
Last Answer : (d) None
Description : If Viking puts an advertisement in student newspapers offering to send people who send in a completed information form a four colour brochure showing and discussing the benefits of its new line of ... ? A)Awareness and adoption B)Trial and adoption C)Interest and evaluation D)Interest and adoption
Last Answer : C)Interest and evaluation
Description : Theories of elastic failure while dealing with brittle materials consider the failure criterion as (a) Ultimate stress (b) Yield stress (c) Both ultimate and yield stress (d) None
Last Answer : (a) Ultimate stress
Description : Which of the following theories of failure is most appropriate for a brittle material? (a) Maximum principal strain theory (b) Maximum principal stress theory (c) Maximum shear stress theory (d) Maximum strain energy theory
Last Answer : (b) Maximum principal stress theory
Description : Minimum shear reinforcement is necessary to [ A ] Prevent brittle shear failure [ B ] Prevent failure due to shrinkage and thermal stresses [ C ] Hold the reinforcements in place while pouring concrete [ D ] All the above.
Last Answer : [ D ] All the above.
Description : What blood tests should I ask for to diagnose fatigue?
Last Answer : answer:Oh also, does anyone think I should try starting drinking coffee? I don’t drink it at all now. Maybe it would help. Also, I get more than eight hours of sleep most nights too.
Description : When examining a completed bend test, the angle of the bend was found to be 185°. The testing specification calls for the sample to have been formed through 180°? a) They should be acceptable as ... then re-examined d) They should be rejected as the angle is not close enough to be acceptable
Last Answer : c) New bends should be produced and bent to 180° then re-examined
Description : Which of the following tests measures the toughness of road aggregates? (A) Crushing strength test (B) Abrasion test (C) Impact test (D) Shape test
Last Answer : Answer: Option C
Description : Sodium depletion occurs in excessive sweating, and cannot be corrected by drinking water alone. When uncorrected, it may lead to A. Increase of urea in blood B. Swelling of ankles and feet C. Muscle cramps, loss of energy, fatigue and faintness D. Renal failure
Last Answer : ANSWER: C