Q.1
Which of the following is an amorphous material?
Q.2
Which of the following is used for bearing liner?
Q.3
Gamma iron exits at following temperature
Q.4
Dow metal contains
Q.5
Hematite iron ore contains iron about
Q.6
White cast iron contains carbon in the form of
Q.7
Weld decay is the phenomenon found with
Q.8
The material in which the atoms are arranged regularly in some directions but not in others, is called
Q.9
The alloying element which reduces the formation of iron sulphide in steel is
Q.10
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.
Q.11
Permalloy is a
Q.12
Process of Austempering results in
Q.13
Which is false statement about tempering? Tempering is done to
Q.14
In which of the following cases, consideration of creep is important
Q.15
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as
Q.16
Phosphor bronze contains
Q.17
A material is known as allotropic or polymorphic if it
Q.18
Pipes for bicycle frames are made of
Q.19
Which of the following metal is used for nuclear energy?
Q.20
Aluminium bronze contains aluminium and copper in the ratio of
Q.21
Sulphur in cast iron
Q.22
An example of amorphous material is
Q.23
Steel made from phosphate iron is
Q.24
The charge of the blast furnace consists of
Q.25
Pearlite consists of
Q.26
Balls for ball bearings are made of
Q.27
The property of a material essential for spring materials is
Q.28
Grey cast iron has
Q.29
Which of the following material has nearly zero coefficient of expansion?
Q.30
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.
Q.31
The blade of a power saw is made of
Q.32
When medium carbon steel is heated to coarsening temperature
Q.33
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
Q.34
German silver is an alloy of
Q.35
Specify the sequence correctly
Q.36
Recrystallization temperature is one
Q.37
Lead is poured into the joint between two pipes. These pipes may be made of
Q.38
Constantan an alloy used in thermocouples is an alloy of
Q.39
The lower critical point for all steels is
Q.40
Tensile strength of steel can be safely increased by
Q.41
Cementite consist of
Q.42
Preheating is essential in welding
Q.43
The hardness of steel increases if it contains
Q.44
Gamma-iron occurs between the temperature ranges of
Q.45
Basic constituents of Monel metal are
Q.46
Steel with __________ carbon is known as hypo-eutectoid steel.
Q.47
Delta-iron occurs between the temperature ranges of
Q.48
In spheroidising process, the steel is
Q.49
The alloying element which can replace tungsten in high speed steels is
Q.50
Grey cast iron
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