Heavy water is obtained by
A.Rapid evaporation of water
B.Slow evaporation of water
C.Repeared purification
D.Low temperature, low pressure distillation
E.Prolonged electrolysis of water
Category: Engineering Materials Mcqs
The amount of cold work that a metal will stand is dependent upon
A.Room temperature
B.Carbon percentage
C.Process
D.Purity of metal
E.Ductility
In general, high cohesive forces are related to
A.Large values of elastic constants
B.Low melting point
C.Large coefficients of thermal expansion
D.Small value of elastic constants
E.None of the above
Small end of a connecting rod forging is
A.Super finished
B.Lapped
C.Honned
D.Ground
E.Broached
The presence of sulphur in pig iron makes
A.It hard
B.It brittle
C.It malleable
D.It machinable
E.Its casting unsound
Permalloy is
A.A non-ferrous alloy used in aircraft industry
B.A non-ferrous alloy containing nickel copper and chromium
C.An nickel and iron alloy having high permeability
D.A kind of stainless steel
E.An alloy similar to carbides
In 18-4-1 high speed steel the maximum percentage of any constituent is
A.Carbon
B.Tungsten
C.Chromium
D.Vanadium
E.Iron
All of the following are destructive tests on materials EXCEPT:
A.Cupping test
B.Tensile test
C.Charpy test
D.Shore’s scleroscope hardness test
E.Fatigue test
The percentage of carbon in low carbon steel is
A.0.15
B.0.5
C.0.7
D.1
E.1.3
The modulus of elasticity E, the modulus of rigidity C, and Poisson’s ratio are related by the equation
A.E = 2G (1 +
B.E = G (2 +
C.E = G (1+ 2
D.E = 2G (1 –
E.E = 2G (1 – 2
