The ability of a material to resist softening at high temperature is known as
The ability of a material to resist softening at high temperature is known as
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
German silver is an alloy of
German silver is an alloy of
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
Ductile cast iron
Ductile cast iron
Cobalt in steel
Cobalt in steel
Depth of hardness of steel is increased by addition of
Depth of hardness of steel is increased by addition of
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is
Which of the following has highest specific strength of all structural materials?
Which of the following has highest specific strength of all structural materials?
Which of the following statements are true for annealing of steels?
Which of the following statements are true for annealing of steels?
Which of the following material has nearly zero coefficient of expansion?
Which of the following material has nearly zero coefficient of expansion?
Corrosion resistance of steel is increased by adding
Corrosion resistance of steel is increased by adding
Which of the following material has maximum ductility?
Which of the following material has maximum ductility?
Quenching is not necessary when hardening is done by
Quenching is not necessary when hardening is done by
Blast furnace produces following by reduction of iron ore
Blast furnace produces following by reduction of iron ore
Cast iron has
Cast iron has
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.
Pick up the wrong statement
Pick up the wrong statement
Maximum percentage of carbon in ferrite is
Maximum percentage of carbon in ferrite is
The stiffness is the ability of a material to resist
The stiffness is the ability of a material to resist
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of
Cast iron is a
Cast iron is a
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is
According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is
Carbon steel is
Carbon steel is
Cold rolled steel sheets contain carbon of the following order
Cold rolled steel sheets contain carbon of the following order
Which is false statement about case hardening? Case hardening is done by
Which is false statement about case hardening? Case hardening is done by
Chromium in steel
Chromium in steel
Monel metal contains
Monel metal contains
By severely deforming a metal in a particular direction it becomes
By severely deforming a metal in a particular direction it becomes
Cast iron is characterized by minimum of following percentage of carbon
Cast iron is characterized by minimum of following percentage of carbon
Which of the following metal shrinks most from molten state to solid state?
Which of the following metal shrinks most from molten state to solid state?
Delta iron occurs at temperature of
Delta iron occurs at temperature of
Recrystallization temperature can be lowered by
Recrystallization temperature can be lowered by
Bronze contains
Bronze contains
The strength is the ability of a material to resist
The strength is the ability of a material to resist
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.
Corrosion resistance of steel is increased by addition of
Corrosion resistance of steel is increased by addition of
Basic constituents of Monel metal are
Basic constituents of Monel metal are
Malleability of a material can be defined as
Malleability of a material can be defined as
Which of the following statement is true about brittle fracture?
Which of the following statement is true about brittle fracture?
When medium carbon steel is heated to coarsening temperature
When medium carbon steel is heated to coarsening temperature
Specify the sequence correctly
Specify the sequence correctly
Which of the following is the binding material in cemented carbides?
Which of the following is the binding material in cemented carbides?
Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?
Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?
The alloy used for making electrical resistances and heating elements is
The alloy used for making electrical resistances and heating elements is
Shock resistance of steel is increased by adding
Shock resistance of steel is increased by adding
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled
In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled
Which of the following statement is correct?
Which of the following statement is correct?
Following elements have face-centered cubic structure
Following elements have face-centered cubic structure
-
-
-
-
Which of the following constituents of steels is softest and least strong?
Which of the following constituents of steels is softest and least strong?
Constantan an alloy used in thermocouples is an alloy of
Constantan an alloy used in thermocouples is an alloy of
1841 high speed steel contains
1841 high speed steel contains
Lead is poured into the joint between two pipes. These pipes may be made of
Lead is poured into the joint between two pipes. These pipes may be made of
Which of the following elements does not impart hardness to steel?
Which of the following elements does not impart hardness to steel?
High carbon steel carries carbon percentage
High carbon steel carries carbon percentage
Pick up wrong statement about wrought iron
Pick up wrong statement about wrought iron
A cold chisel is made of
A cold chisel is made of
Eutectoid steel contains following percentage of carbon
Eutectoid steel contains following percentage of carbon
The lower critical point for all steels is
The lower critical point for all steels is
Crystal structure of a material is, generally, examined by
Crystal structure of a material is, generally, examined by
In high speed steels, manganese is used to tougher the metal and to increase its
In high speed steels, manganese is used to tougher the metal and to increase its
Delta-iron occurs between the temperature ranges of
Delta-iron occurs between the temperature ranges of
Ductility of a material can be defined as
Ductility of a material can be defined as
Preheating is essential in welding
Preheating is essential in welding
The defect which takes place due to imperfect packing of atoms during crystallization is known as
The defect which takes place due to imperfect packing of atoms during crystallization is known as
If a refractory contains high content of silicon, it means refractory is
If a refractory contains high content of silicon, it means refractory is
Muntz metal contains copper and zinc in the ratio of
Muntz metal contains copper and zinc in the ratio of
The crystal structure of brass is
The crystal structure of brass is
Free cutting steels
Free cutting steels
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
The ability of a material to absorb energy in the plastic range is called
The ability of a material to absorb energy in the plastic range is called
Inconel is an alloy of
Inconel is an alloy of
Tungsten in high speed steel provides
Tungsten in high speed steel provides
Cementite consist of
Cementite consist of
The cupola is used to manufacture
The cupola is used to manufacture
The blade of a power saw is made of
The blade of a power saw is made of
Which is false statement about annealing? Annealing is done to
Which is false statement about annealing? Annealing is done to
Which of the following property is desirable in parts subjected to shock and impact loads?
Which of the following property is desirable in parts subjected to shock and impact loads?
Heavy duty leaf and coil springs contain carbon of the following order
Heavy duty leaf and coil springs contain carbon of the following order
Gamma-iron occurs between the temperature ranges of
Gamma-iron occurs between the temperature ranges of
The machinability of aluminium increases when _________ is added to aluminium.
The machinability of aluminium increases when _________ is added to aluminium.
The steel widely used for motor car crankshafts is
The steel widely used for motor car crankshafts is
The electric process of steel making is especially adapted to
The electric process of steel making is especially adapted to
The hardness of steel increases if it contains
The hardness of steel increases if it contains
Age-hardening is related with
Age-hardening is related with
Recrystallization temperature is one
Recrystallization temperature is one
Steel with __________ carbon is known as hypo-eutectoid steel.
Steel with __________ carbon is known as hypo-eutectoid steel.
Steel containing ferrite and pearlite is
Steel containing ferrite and pearlite is
Thermoplastic materials are those materials which
Thermoplastic materials are those materials which
The bond formed by transferring electrons from one atom to another is called
The bond formed by transferring electrons from one atom to another is called
Eutectoid reaction occurs at
Eutectoid reaction occurs at
Brass contains
Brass contains
Which of the following statement is wrong?
Which of the following statement is wrong?
Manganese in steel increases its
Manganese in steel increases its
