During induction hardening the depth of hardening is controlled by
A.Current
B.Voltage
C.Frequency
D.Phase angle
E.None of the above
Category: Engineering Materials Mcqs
When metal is deformed by cold work, severe stresses known as residual stresses are undesirable and to remove them
A.The metal should be stressed in reverse direction
B.The metal should be painted
C.The metal should be reheated below recrystallization temperature
D.The metal should be reheated above recrystallization temperature
E.None of the above
The process by which steel is coated by a thin layer of phosphate is known as
A.Anodising
B.Parkerising
C.Spheroidizing
D.Phosphorizing
E.Sheradising
The process of austempering results in the formation of
A.Carburized structure
B.Nitride structure
C.Martensitic structure
D.Bainite structure
E.Superhand structure
Polysterene is
A.An ester
B.An alcohol
C.A hydrocarbon
D.An alkyl halide
Pipes for bicycle frames are made of
A.Hot rolled steel
B.Cold rolled steel
C.Cast iron
D.Stainless steel
E.Carbon chrome steel
Hastalloy consists of
A.Nickel and copper
B.Copper and aluminium
C.Aluminium and nickel
D.Nickel and molybdenum
E.Nickel, copper and aluminium
Stress concentration may be caused by
A.Change in cross-sectional area
B.Change in shape
C.Change in dimensions
D.Polishing or painting a surface
E.A home or a notch in the body
In press work the dies which combine two or more operations at one station are known as
A.Simple dies
B.Press
C.Compound dies
D.Progressive dies
E.Die and punch
The ability of material to absorb a large amount of energy is
A.Ductility
B.Malleability
C.Toughness
D.Resilience
E.Hardness
