Machining properties of steel are improved by adding
A.Chromium
B.Nickel
C.Cobalt
D.Lead
E.Silicon
Category: Engineering Materials Mcqs
Hardness of martensite is about
A.RC 65
B.RC 48
C.RC 57
D.RC 67
E.RC 89
A lead based bearing alloy contains
A.Lead-antimony-tin-copper
B.Lead-antimony-tin-silver
C.Lead-nickle-tin
D.Lead-copper-tin-copper
E.Lead-aluminium-copper
Creep is expressed in terms of
A.kg/cm
B.kg/cm2
C.cm/cm
D.cm/cm/hr
E.cm/cm2/hr
The Miller indices of the diagonal plane of a cube are
A.110
B.111
C.100
D.0
E.10
Boring is generally
A.Followed by reaming
B.Preceded by reaming
C.Followed by drilling
D.Preceded by drilling
E.None of the above
In high speed steel the maximum percentage of any alloying element is
A.Carbon
B.Tungsten
C.Chromium
D.Vanadium
E.Molybdenum
Hot hardness of high speed steels increases due to the addition of
A.Tungsten
B.Phosphorous
C.Chromium
D.Vanadium
E.None of the above
Which of the following factor has the least effect on the electrical conductivity of wires made of copper alloy?
A.Method of forming the wire
B.Temperature
C.Alloying element
D.Intensity of any incident light
The process of production of articles having a soft ductile interior and a very hard surface, is known as
A.Hardening
B.Hardening and tempering
C.Case hardening
D.Hardening and annealing
E.None of the above
