Nitriding is a process for
A.Annealing
B.Spheroidizing
C.Case hardening
D.Normalizing
E.None of the above
Category: Engineering Materials Mcqs
Which of the following is p-type semi-conductor?
A.Selenium
B.Silicon doped with phosphorous
C.Silicon doped with gallium
D.All of the above
E.None of the above
Electron with energy level of 2 MeV is considered as
A.Dead slow electron
B.Slow electron
C.Fast electron
D.Super-fast electron
E.There is no consideration as such
Corrosion is a destructive attack on metals
A.Which may be chemical or electrochemical in nature
B.Which is basically caused by atmospheric air
C.Which is caused by contact with other metals
D.At high temperature
E.None of the above
Viscoelastic materials show behaviour which is
A.Time dependent
B.Independent of time
C.Elastic
D.Inelastic
E.Plastic
Which of the following polymer is crystalline?
A.Polyethylene
B.Polymethyl metacrylate
C.Polyvinyl chloride
D.Polyvinylidene chloride
When the metals are severely deformed in a particular direction, as in rolling or forging (on a macro scale), the mechanical properties may be
A.Identical
B.Isotropic
C.Anisotropic
D.Uniform
E.Non-uniform
Galvanizing is generally done on
A.Low carbon steels
B.Cast iron
C.Non-ferrous metals
D.Non-metallic substances
E.None of the above
In electro-forming the metal is supplied to the mould from
A.Solution
B.By liquids
C.Electrolytic solution in which bar of pure metal acts as an anode for the plating current
D.Separately by coating with a point
E.None of the above
The cast iron has
A.High ductility
B.High malleability
C.High tensile strength
D.Elastic limit close to ultimate breaking strength
E.None of the above
