A. High speed steel
B. Shock resisting steel
C. Cold work tool steel
D. None of these
Related Mcqs:
- A measure of toughness of a material is its________________?
A. Percentage elongation
B. Yield strength
C. Ultimate strength
D. Area under stress-strain diagram - Sherardizing process is used for__________________?
A. Surface coating
B. Heat treatment of high speed steel
C. Cold working on metals
D. None of these - Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?
A. Acetic acid
B. Benzoic & boric acids
C. Phosphoric acid (95%) & sulphuric acid (95%)
D. Hydrochloric acid (concentrated) - The high expansion metal normally used in the bimetallic thermometer is _______________ temperature measurement?
A. Brass for low
B. Nickel alloys for high
C. Both A. & B.
D. Aluminium for all - Wrought iron is having very high ________________?
A. Hardness
B. Strength
C. Corrosion resistance
D. Susceptibility to changes in its properties by heat treatment - Very high sulphur in pig iron makes ___________________?
A. Its casting unsound
B. Its hard and machinable
C. Its brittle and malleable
D. All A., B. & C. - 18-4-1 high speed steel contains 18%, 4% and 1% respectively of____________________?
A. Tungsten, vanadium and chromium
B. Tungsten, chromium and vanadium
C. Vanadium, chromium and tungsten
D. Chromium, tungsten and vanadium - Presence of high amount of silicon in cast iron________________?
A. Suppresses the decomposition of Fe3C
B. Increases the formation of graphite
C. Increases the contraction of the metal
D. Reduces its fluidity - Presence of high phosphorous in cast iron increases its____________________?
A. Fluidity
B. Melting point
C. Shrinkage
D. Tensile strength - Thermal shield used in high powered nuclear reactor to protect the walls of the reactor from radiation damage is made of___________________?
A. Concrete
B. Steel
C. Zircaloy
D. Graphite
