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
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 statement is correct in connection with projectiles?
A A path, traced by a projectile in the space, is known as trajectory.
B The velocity, with which a projectile is projected, is known as the velocity of projection.
C The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.
D All of the above
'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
Gun metal is an alloy of
A Nickel, tin and copper
B Copper, tin and zinc
C Copper, phosphorus and nickel
D Manganese, phosphorus and nickel
The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to
A 1 to 2 m per second
B 2 to 3 m per second
C 3 to 4 m per second
D 4 to 5 m per second
Which of the following material is not used in alloy steels?
A Molybdenum
B Nickel
C Chromium
D Sodium
The alloy, mainly used for corrosion resistance in stainless steels is
A Silicon
B Manganese
C Carbon
D Chromium

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