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For the following questions answer them individually
With which of the following age hardening is related?
Cast iron
Gun metal
Duralumin
German silver
Monel metal is an alloy of
Cu and Cr
Ni and Cu
Ni and Cr
Cu, Ni and Cr
______ iron is the magnetic allotrope of iron.
$$ \alpha $$
$$ \beta $$
$$ \gamma $$
$$ \delta $$
The bonding of a rubber sheet with a metal is done by
Welding
High frequency dielectric heating
Induction welding
Adhesive bonding
Plain and butt welds may be used on materials upto approximately
25 mm thick
40 mm thick
50 mm thick
75 mm thick
An optical gauge works on the principle of
reflection of light rays
polarisation of light rays
interference of light rays
refraction of light rays
Generally, the strongest form in which metals can be used as
hot rolling
cold rolling
extrusion
forging
Thermite is a mixture of
five aluminium and iron oxide in the ratio of 3:1
five iron and aluminium oxide in the ratio of 3:1
five aluminium and iron oxide in the ratio of 3:1, with traces of sulphur, phosphorus and manganese
molten iron and aluminium, with the ratio depending upon the type of the surface to be welded
The process of enlarging a hole is known as
counter boarding
counter sinking
boring
drilling
Which of the following statements is true?
Crater wear is predominant in ceramic tools
Crater wear is predominant in carbon tool steel
Crater wear is predominant in tungsten carbide tools
Crater wear is predominant in high speed steel tools
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