Related Questions

For hardening alloy steels and high speed steels, they are heated to
A 1100 to 1300°C
B 1300 to 1500°C
C 500 to 600°C
D 700 to 900°C
'Killed steels' are those steels
A Which are destroyed by burning
B Which after their destruction are recycled to produce fresh steel
C Which are deoxidized in the ladle with silicon and aluminium
D In which carbon is completely burnt
Steels with high carbon equivalent have poor weldability, because in these steels during welding
A Carbon and other alloying elements get oxidised from the weld pool
B Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
C Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
D Segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld
Ferric stainless steels compared to austenitic stainless steels
A Have lower corrosion resistance
B Are harder to fabricate
C Are less ductile and hence less suitable for cold pressing
D All of the above
The alloy, mainly used for corrosion resistance in stainless steels is
A Silicon
B Manganese
C Carbon
D Chromium
The cutting fluid mostly used for machining alloy steels is
A Water
B Soluble oil
C Dry
D Sulphurised mineral oil
Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines?
A Silicon steel
B Chromium steel
C Molybdenum steel
D None of these
Which of the following alloy steels is the most suitable for making gun barrels and projectiles?
A Tungsten steel
B Molybdenum steel
C Nickel-chrome steel
D Cobalt steel
Constantan an alloy used in thermocouples is an alloy of
A Copper and tin
B Copper and zinc
C Copper and iron
D Copper and nickel
Perminvar alloy having constant permeability is an alloy of
A Nickel, copper and iron
B Nickel, copper and zinc
C Copper, nickel and antimony
D Iron, zinc and bismuth

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