Q.1
Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
Q.2
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio
Q.3
Heavy duty leaf and coil springs contain carbon of the following order
Q.4
Cold rolled steel sheets contain carbon of the following order
Q.5
Corrosion resistance of steel is increased by addition of
Q.6
Depth of hardness of steel is increased by addition of
Q.7
By severely deforming a metal in a particular direction it becomes
Q.8
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.
Q.9
Which of the following statements are true for annealing of steels?
Q.10
Which is false statement about annealing? Annealing is done to
Q.11
Eutectoid reaction occurs at
Q.12
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of
Q.13
Manganese in steel increases its
Q.14
Free cutting steels
Q.15
The cupola is used to manufacture
Q.16
Pick up the wrong statement
Q.17
Which of the following metal shrinks most from molten state to solid state?
Q.18
Tungsten in high speed steel provides
Q.19
1841 high speed steel contains
Q.20
Which of the following is the binding material in cemented carbides?
Q.21
Which of the following statement is correct?
Q.22
Monel metal contains
Q.23
Inconel is an alloy of
Q.24
The alloying element which increases residual magnetism and coercive magnetic force in steel for magnets is
Q.25
The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called
Q.26
A steel containing 16 to 18% chromium and about 0.12% carbon is called
Q.27
Which of the following is added in low carbon steels to prevent them from becoming porous?
Q.28
The correct composition of Babbitt metal is
Q.29
'Killed steels' are those steels
Q.30
Beryllium bronze has
Q.31
An important property of malleable cast iron in comparison to grey cast iron is the high
Q.32
Malleable cast iron is produced
Q.33
The maximum internal diameter of a blast furnace is about
Q.34
The hardness of steel depends upon the
Q.35
The unique property of cast iron is its high
Q.36
An alloy steel which is work hardenable and which is used to make the blades of bulldozers, bucket wheel excavators and other earth moving equipment contain iron, carbon and
Q.37
The percentage of carbon in pig iron varies from
Q.38
Pick up the wrong statement Nickel and chromium in steel help in
Q.39
The carbon in the pig iron varies from
Q.40
The percentage of carbon in cast iron varies from
Q.41
Annealing of white cast iron results in production of
Q.42
An important property of high silicon (12-18%) cast iron is the high
Q.43
The correct sequence for descending order of machinability is
Q.44
The ability of a material to resist fracture due to high impact loads, is called
Q.45
Brass (alloy of copper and zinc) is an example of
Q.46
The coke in the charge of blast furnace
Q.47
Carbon in iron is an example of
Q.48
Which of the following alloys does not contain tin?
Q.49
Railway rails are normally made of
Q.50
Materials after cold working are subjected to following process to relieve stresses
0 h : 0 m : 1 s