The hardness of steel depends on
A.Heating temperature before quenching
B.Amount of carbon it contains
C.The shape and distribution of carbides in iron
D.Percentage of alloying elements
E.Basic process from which it is produced
Category: Engineering Materials Mcqs
Laser is a device to produce
A.a beam of white light
B.a beam of coherent light
C.microwaves
D.gamma rays
The property of materials by which they can be drawn into wires is known as
A.Ductility
B.Elasticity
C.Plasticity
D.Malleability
E.Creep
Which of the following material has lowest specific gravity?
A.Brass
B.Copper
C.High carbon steel
D.Zinc
E.Aluminium
Coolant is used on a lathe
A.To cool the work piece
B.To cool the tool
C.To remove the chips
D.All the above
E.None of the above
Cemented carbide tools are generally not used for the machining of
A.Steel
B.Aluminium
C.Brass
D.Bronze
E.Cast iron
Grey iron
A.Has low ductility
B.Breaks with appreciable distortion
C.Has brittleness
D.Low compression strength
E.None of the above
The advantage of electroforming is
A.Extreme dimensional accuracy can be held on surfaces with surface finish of 8 r.m.s. or even less
B.Laminated metals can be produced
C.Rate of production is very high
D.(A) and (B) above
E.(A) and (C) above
The phenomenon of weld decay is found in
A.Cast iron
B.Brass
C.Bronze
D.Gun metal
E.Stainless steel
In inverse rate curve
A.The abscissa is carbon percentage
B.The abscissa is temperature
C.The abscissa is time
D.The ordinate is time
E.The ordainate is temperature
