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Engineering Materials

Engineering Materials
The blade of a power saw is made of

Malleable cast iron
Stainless steel
Boron steel
High speed steel

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Engineering Materials
The hardness of steel primarily depends on

Percentage of alloying elements
Percentage of carbon
Heat treatment employed
Shape of carbides and their distribution in iron

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Engineering Materials
Which of the following pipes is least corrosion resistant?

Wrought iron
Brass
Mild steel
Cast iron

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

Below recrystallization temperature
770°C
910°C
1050°C

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Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Pearlite and cementite
Mainly ferrite
Mainly pearlite
Ferrite and pearlite

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Manganese
Silicon
Sulphur
Phosphorus

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