Objective Questions on Extractive Metallurgy for GATE, SAIL - 1
A material used for extrusion purpose must possess the following mechanical property.
_____ base alloys is susceptible for magnetic particle method of testing.
Which fuel gas is commonly used for hot machine scarfing of slabs?
(A) Acetylene gas
(B) Blast furnace gas
(C) Coke oven gas
(D) None of these
Coke oven gas
_____ is not suitable for impact load.
(A) Cast iron
(B) Chrome steel
(C) High carbon steel
(D) Mild steel
Work hardening of metals
(A) Increases ductility
(B) Decreases ductility
(C) Decreases tensile strength
(D) Does not affect ductility
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