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

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

1 Answer

Answer :

(D) Soft
by

Related questions

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

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

__________ of hard alloy and tool steel is done to make it easily machinable. (A) Case carburising (B) Tempering (C) Normalising (D) Annealing

Description : __________ of hard alloy and tool steel is done to make it easily machinable. (A) Case carburising (B) Tempering (C) Normalising (D) Annealing

Last Answer : (B) Tempering

Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Last Answer : (B) Tempering

Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Description : Softening of hardened steel is done by its (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Last Answer : (A) Normalising

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

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

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

Last Answer : d) Hard

The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing

Description : The heat treatment process applied to cold formed steel parts is (A) Normalising (B) Tempering (C) Artificial ageing (D) Solution annealing

Last Answer : (D) Solution annealing

The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these

Description : The heat treatment process to which castings and the steel balls produced by cold heading are subjected is (A) Tempering (B) Normalising (C) Annealing (D) None of these

Last Answer : (B) Normalising

. To improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing

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Last Answer : (A) Spheroidising

The process of coating steel sheets by zinc to improve its corrosion resistance is called (A) Calorising (B) Galvanising (C) Zincification (D) Tempering

Description : The process of coating steel sheets by zinc to improve its corrosion resistance is called (A) Calorising (B) Galvanising (C) Zincification (D) Tempering

Last Answer : (B) Galvanising

Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Description : Hardened steel is softened by (A) Normalising (B) Tempering (C) Annealing (D) Carburising

Last Answer : (B) Tempering

Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part? (A) Anodising (B) Tempering (C) Carburising

Description : Which of the following processes follows the hardening process for reducing the hardening strains & increasing the toughness of the steel part? (A) Anodising (B) Tempering (C) Carburising

Last Answer : (B) Tempering

Pick out the correct statement. (A) Hot worked materials are subjected to annealing to remove internal stresses (B) Annealing of steel hardens it slightly (C) Normalising of a material induces stresses (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness

Description : Pick out the correct statement. (A) Hot worked materials are subjected to annealing to remove internal stresses (B) Annealing of steel hardens it slightly (C) Normalising of a material induces stresses (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness

Last Answer : (D) Tempering of a material improves ductility & toughness but reduces hardness & brittleness Share

o improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing

Description : o improve the machinability of steel, it is generally subjected to (A) Spheroidising (B) Tempering (C) Normalising (D) Annealing

Last Answer : Option A

Machinability of hard alloys and tool steels is improved by (A) Spheroidising (B) Annealing (C) Tempering (D) Normalising

Description : Machinability of hard alloys and tool steels is improved by (A) Spheroidising (B) Annealing (C) Tempering (D) Normalising

Last Answer : Option B

Post weld heat treatment is done by (A) Normalising (B) Stress relieving (C) Tempering (D) Solution annealing

Description : Post weld heat treatment is done by (A) Normalising (B) Stress relieving (C) Tempering (D) Solution annealing

Last Answer : (B) Stress relieving

Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion. (A) Annealing (B) Toughening (C) Work hardening (D) Tempering

Description : Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded portion. (A) Annealing (B) Toughening (C) Work hardening (D) Tempering

Last Answer : (A) Annealing

Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft magnetic materials (C) Soft magnetic materials (e.g., pure iron) have higher permeability and low hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Description : Pick out the wrong statement. (A) A ferromagnetic material becomes paramagnetic above the 'Curie temperature' (B) Permanent magnets are made of hard materials, whereas electromagnets require soft ... hysterisis loss and coercive forces (D) Tungsten steel and alnico are not hard magnetic materials

Last Answer : Option D

Pick out the wrong statement (A) Hardening makes the steel more brittle (B) High alloy steels contain more than 50% alloying element (C) 18/8 stainless steel is a magnetic steel (D) Both (B) and (C)

Description : Pick out the wrong statement (A) Hardening makes the steel more brittle (B) High alloy steels contain more than 50% alloying element (C) 18/8 stainless steel is a magnetic steel (D) Both (B) and (C)

Last Answer : (D) Both (B) and (C)

Presence of nitrogen in steel (A) Makes it brittle (B) Increases its strength (C) Increases its hardness (D) Is desirable

Description : Presence of nitrogen in steel (A) Makes it brittle (B) Increases its strength (C) Increases its hardness (D) Is desirable

Last Answer : (A) Makes it brittle

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'

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Last Answer : (A) Carbon

Pick out the correct statement. (A) Stainless steel is nothing but chromium coated steel (B) Hardening of a soft metal can be done by alloying it with another metal or non-metal (C) Plastic deformation of a material is its temporary distortion under the action of applied stress (D) Rusting of iron is not electrochemical in nature

Description : Pick out the correct statement. (A) Stainless steel is nothing but chromium coated steel (B) Hardening of a soft metal can be done by alloying it with another metal or non-metal (C) ... its temporary distortion under the action of applied stress (D) Rusting of iron is not electrochemical in nature

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Last Answer : (A) Malleable

Duriron is (A) Acid resistant, brittle and very hard (B) High silicon iron (C) Prone to breakage due to thermal expansion because of its very high co￾efficient of thermal expansion (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

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Last Answer : (A) Its casting unsound

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Last Answer : (D) All (A), (B) & (C)

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Last Answer : A) Ductile material

The best material for the core of a transformer is – (1) stainless steel (2) mild steel (3) hard steel (4) soft iron

Description : The best material for the core of a transformer is – (1) stainless steel (2) mild steel (3) hard steel (4) soft iron

Last Answer : (4) soft iron Explanation: Iron has a very large magnetic response: it greatly amplifies an applied magnetic field. The transformer's ability to transfer energy depends on the strength of the magnetic ... field is amplified. The input energy can then be lower while still having the same effect.

The best material for the core of a transformer is (1) stainless steel (2) mild steel (3) hard steel (4) soft iron

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Last Answer : soft iron

Draw B-H curve for magnetic material and state its nature. State the significance of hysteresis loop. Also draw the hysteresis loop for hard steel and soft steel.

Description : Draw B-H curve for magnetic material and state its nature. State the significance of hysteresis loop. Also draw the hysteresis loop for hard steel and soft steel. 

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Draw Hysteresis loop for Hard steel and soft steel. Also write one application of each material.

Description : Draw Hysteresis loop for Hard steel and soft steel. Also write one application of each material.

Last Answer : Application of Hard steel:  Fig. (a) Shows hysteresis loop for hard steel. Such materials are used for producing permanent magnets. Such a hysteresis loop represents a large residual ... Residual flux & coercive force are less. Hence material can be used for making the electromagnets. 

'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.

'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

What is hard and brittle iron that is formed into a particular shape by pouring the liquid metal into a mold?

Description : What is hard and brittle iron that is formed into a particular shape by pouring the liquid metal into a mold?

Last Answer : I think it would be cast

Why are ionic solids hard and brittle?

Description : Why are ionic solids hard and brittle?

Last Answer : Ionic solids are brittle and hard as they are bonded with electrostatic bonds.

Why are ionic solids hard and brittle?

Description : Why are ionic solids hard and brittle?

Last Answer : Ionic solids are brittle and hard as they are bonded with electrostatic bonds.

Sedimentary rocks are-----? A. Porous (Answer) B. Hard C. Rough D. Brittle E. Volcanic

Description : Sedimentary rocks are-----? A. Porous (Answer) B. Hard C. Rough D. Brittle E. Volcanic

Last Answer : A. Porous (Answer)

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 

Quartzite, a metamorphic stone is (A) Hard (B) Brittle (C) Crystalline (D) All the above

Description : Quartzite, a metamorphic stone is (A) Hard (B) Brittle (C) Crystalline (D) All the above

Last Answer : Answer: Option D

Which of the following heat treatment processes is used for softening the hardened material? (A) Normalising (B) Tempering (C) Annealing (D) None of these

Description : Which of the following heat treatment processes is used for softening the hardened material? (A) Normalising (B) Tempering (C) Annealing (D) None of these

Last Answer : (B) Tempering

What is the range of tempering temperature (°C) for most of the materials? (A) 75-100 (B) 200-300 (C) 350-450 (D) 500-600

Description : What is the range of tempering temperature (°C) for most of the materials? (A) 75-100 (B) 200-300 (C) 350-450 (D) 500-600

Last Answer : (B) 200-300

Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening

Description : Spheroidising of a material is a/an __________ process. (A) Normalising (B) Annealing (C) Tempering (D) Hardening

Last Answer : (B) Annealing

Which of the following heat treatment processes is usually applied to castings? (A) Tempering (B) Annealing (C) Normalising (D) Carburising

Description : Which of the following heat treatment processes is usually applied to castings? (A) Tempering (B) Annealing (C) Normalising (D) Carburising

Last Answer : (D) Carburising

Tempering of a material does not improve its (A) Machinability (B) Toughness (C) Internal stress level (D) Softness

Description : Tempering of a material does not improve its (A) Machinability (B) Toughness (C) Internal stress level (D) Softness

Last Answer : A) Machinability

Corrosion of metals cannot be prevented by its (A) Tempering (B) Chromising (C) Aluminising (D) Alloying

Description : Corrosion of metals cannot be prevented by its (A) Tempering (B) Chromising (C) Aluminising (D) Alloying

Last Answer : (A) Tempering

__________ of grey cast iron produces white cast iron. (A) Tempering (B) Rapid heating (C) Rapid cooling (D) Slow cooling

Description : __________ of grey cast iron produces white cast iron. (A) Tempering (B) Rapid heating (C) Rapid cooling (D) Slow cooling

Last Answer : Option B

Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising

Description : Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called (A) Tempering (B) Hardening (C) Annealing (D) Normalising

Last Answer : Option C