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Engineering Materials

Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Hindalium
Duralumin
Y-alloy
Magnalium

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Engineering Materials
Iron is

Dielectric
Paramagnetic
Ferroelectric
Ferromagnetic

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Engineering Materials
Weld decay is the phenomenon found with

Nonferrous materials
Cast iron
Stainless steel
Mild steel

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Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Increase
First increase and then decrease
Decrease
Remain same

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Engineering Materials
In nodular iron, graphite is in the form of

Free carbon
Flakes
Cementite
Spheroids

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Engineering Materials
Which of the following statements are true for annealing of steels?

Internal stresses are relieved
Cooling is done slowly and steadily
Steels are heated to 500 to 700°C
All of these

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