Engineering Materials
Corrosion resistance of steel is increased by adding

Chromium and nickel
Aluminium and zinc
Tungsten and sulphur
Nickel and molybdenum

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Y-alloy contains

4 to 4.5% magnesium, 3 to 4% copper and rest aluminium
5 to 6% tin, 2 to 3% copper and rest aluminium
3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium
3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
The brown smoke during the operation of a Bessemer converter indicates that the

The converter must be titled to remove the contents of the converter
Air is burning out silicon and manganese
Silicon and manganese has burnt and carbon has started oxidizing
The brown smoke does not occur during the operation of a Bessemer converter

ANSWER DOWNLOAD EXAMIANS APP