Engineering Materials
The main alloying elements high speed steel in order of increasing proportion are

Chromium, titanium, vanadium
Tungsten, chromium, titanium
Tungsten, titanium, vanadium
Vanadium, chromium, tungsten

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
In a hardening process, the hypo-eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
Heated below or closes to the lower critical temperature and then cooled slowly

ANSWER DOWNLOAD EXAMIANS APP