The substance which break just after elastic limit: a) Ductile b) Brittle c) Soft d) Hard

The substance which break just after elastic limit:
a) Ductile b) Brittle c) Soft d) Hard
by

1 Answer

Answer :

d) Hard
by

Related questions

The substance which undergo plastic deformation until break is a) Brittle b) Ductile c) Hard d) Soft

Description : The substance which undergo plastic deformation until break is a) Brittle b) Ductile c) Hard d) Soft

Last Answer : d) Soft

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

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

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

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

A dense structure of grinding wheel is not used for the (A) Ductile material (B) Hard materials (C) Brittle materials (D) Finishing cuts

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

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

Description : 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

Last Answer : (a)Firstly Ultimate >yield > elastic limit

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

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

Last Answer : (c) Thirdly Ultimate=yield=elastic limit

Fibrous fracture is normally encountered in the __________ materials. (A) Hard (B) Elastic (C) Ductile

Description : Fibrous fracture is normally encountered in the __________ materials. (A) Hard (B) Elastic (C) Ductile

Last Answer : Option C

Charpy impact tests showing a rough torn surface after the completed test, this would indicate which type of failure? a) Fatigue b) Ductile c) Fatigue to ductile d) Brittle

Description : Charpy impact tests showing a rough torn surface after the completed test, this would indicate which type of failure? a) Fatigue b) Ductile c) Fatigue to ductile d) Brittle

Last Answer : b) Ductile

The materials which have the same elastic properties in all directions, are called (A) Isotropic (B) Brittle (C) Homogeneous (D) Hard

Description : The materials which have the same elastic properties in all directions, are called  (A) Isotropic  (B) Brittle  (C) Homogeneous  (D) Hard 

Last Answer : (A) Isotropic 

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

Increasing sulphur content in pig iron tends to make it (A) Soft (B) Hard (C) Tough (D) Ductile & malleable

Description : Increasing sulphur content in pig iron tends to make it (A) Soft (B) Hard (C) Tough (D) Ductile & malleable

Last Answer : Option B

'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

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.

Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?

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.

List at least two factors that promote transition from ductile to brittle fracture.

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.

Polystyrene is a __________ plastic at room temperature. (A) Ductile (B) Brittle (C) Malleable (D) None of these

Description : Polystyrene is a __________ plastic at room temperature. (A) Ductile (B) Brittle (C) Malleable (D) None of these

Last Answer : (B) Brittle

Zinc is highly __________ at room temperature. (A) Ductile (B) Resistant to atmospheric corrosion (C) Malleable (D) 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

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

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

Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable

Description : Cast iron is a __________ material. (A) Brittle (B) Ductile (C) Tough (D) Malleable

Last Answer : (A) Brittle

. 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

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

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

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

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

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

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

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

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

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

Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough

Description : Steel produced from phosphatic iron is __________ in nature. (A) Malleable (B) Ductile (C) Brittle (D) Tough

Last Answer : (C) Brittle

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'

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

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

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

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

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

What Is Ductile-brittle Transition Temperature?

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

Which Theories Of Failure Are Used For? (a) Ductile Materials (b) Brittle Materials?

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.

List At Least Two Factors That Promote The Transition From Ductile To Brittle Fracture?

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.

Distinguish Between Brittle Fracture And Ductile Fracture?

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.

Which stress strain curve is more steep (a) For a ductile material (b) For a brittle material (c) For a pure metal (d) None

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

'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

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

Define factor of safety for ductile and brittle material.

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

Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Description : Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Last Answer : (D) Soft

Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Description : Tempering of steel is done to make it (A) Brittle (B) Hard (C) Rollable (D) Soft

Last Answer : (D) Soft

Indicate which of the following material does not retain magnetism permanently. (a) Soft iron (b) Stainless steel (e) Hardened steel (d) None of the above

Description : Indicate which of the following material does not retain magnetism permanently. (a) Soft iron (b) Stainless steel (e) Hardened steel (d) None of the above

Last Answer : (a) Soft iron

What are the advantages of the use of frequency converter instead of star-delta or soft starter?

Description : Can you guys explain the advantages of frequency converter against the star delta or soft starter?

Last Answer : ¬Soft starters  A soft starter is, as you would expect, a device which ensures a soft starting of a motor. A softstarter has different characteristics to the other starting ... at rated current from zero to full speed. Frequency converters are becoming cheaper all the time.

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

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

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

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

A brittle material has (a) No elastic zone (b) No plastic zone (c) Large plastic zone (d) None of these

Description : A brittle material has (a) No elastic zone (b) No plastic zone (c) Large plastic zone (d) None of these

Last Answer : 2

To limit the operating temperature an electrical machine should have proper?

Last Answer : To limit the operating temperature an electrical machine should have proper current rating.

When an iron piece is placed in a magnetic field (a) the magnetic lines of force will bend away from their usual paths in order to go away from the piece (b) the magnetic lines of force will bend away from their usual paths in order to pass through the piece (c) the magnetic field will not be affected (d) the iron piece will break

Description : When an iron piece is placed in a magnetic field (a) the magnetic lines of force will bend away from their usual paths in order to go away from the piece (b) the magnetic lines of force will bend ... to pass through the piece (c) the magnetic field will not be affected (d) the iron piece will break

Last Answer : (b) the magnetic lines of force will bend away from their usual paths in order to pass through the piece

In a semiconductor diode, p-side is earthed and to n-side is applied a potential of -2 volt; the diode shall (a) Conduct (b) Not conduct (c) Conduct partially (d) Break down

Description : In a semiconductor diode, p-side is earthed and to n-side is applied a potential of -2 volt; the diode shall (a) Conduct (b) Not conduct (c) Conduct partially (d) Break down

Last Answer : a) Conduct

Which of the following is prone to cup and cone fracture? (A) Cast iron (B) Soft brass (C) Round specimen of ductile metal (D) Flat tensile specimen of ductile metal

Description : Which of the following is prone to cup and cone fracture? (A) Cast iron (B) Soft brass (C) Round specimen of ductile metal (D) Flat tensile specimen of ductile metal

Last Answer : Option C

A permeable substance is one (a) which is a good conductor (6) which is a bad conductor (c) which is a strong magnet (d) through which the magnetic lines of force can pass very easily

Description : A permeable substance is one (a) which is a good conductor (6) which is a bad conductor (c) which is a strong magnet (d) through which the magnetic lines of force can pass very easily

Last Answer : (d) through which the magnetic lines of force can pass very easily

The majority carriers in N-type substance are a) Holes b) Protons c) Neutrons d) Electrons

Description : The majority carriers in N-type substance are a) Holes b) Protons c) Neutrons d) Electrons

Last Answer : d) Electrons