Top 350+ Solved Engineering Materials MCQ Questions Answer
Q. The material for wire drawing should have
a. High hardness
b. High melting point
c. Low boiling point
d. Stiffness
e. High ductility
Q. Which one of the following is usually most ductile?
a. Hexagonal close packed lattice
b. Body centred cubic lattice
c. Face centred cubic lattic
d. Combination of (A) and (C) above
e. None of the above
Q. The maximum hardenability of any steel depends on
a. The carbon content
b. The chemical composition
c. The grain size
d. The alloying elements present
e. None of the above
Q. Steel may be manufactured by
a. Bessemer process
b. Open hearth process
c. Cementation process
d. Duplex process
e. Any of the above
Q. Electro-forming is particularly vauable for
a. Non-ferrous components
b. Good conductors of electricity
c. Parts which cannot be machined
d. Decorative items
e. Thin walled parts requiring a high order of accuracy and internal surface finish
Q. Wrought iron is
a. Melts easily at 1500?C
b. Easily hardened
c. Used for castings
d. Not used for castings
e. Least resistant to corrosion fatigue stresses
Q. Which one is different from the remaining
a. Flame hardening
b. Electroplating
c. Cynding
d. Nitriding
e. Pack carburizing
Q. All of the following are examples of ceramic materials EXCEPT
a. Bakelite
b. Aluminium oxide
c. Magnesium oxide
d. Glass
e. None of the above is true
Q. Process of making a thin phosphate coating on steel to act as a base or primer for enamels and paints in known as
a. Prepainting
b. Colourizing
c. Anodising
d. Surface preparing
e. Parkerizing
Q. A thermocouple works on which of the following effect?
a. Thomson effect
b. Seeback effect
c. Peltier effect
d. Joule effect
e. None of the above
Q. The highest percentage of carbon that an iron carbon alloy can have is
a. 3%
b. 4.40%
c. 12.12%
d. 2%
e. 6.60%
Q. A lead based bearing alloy contains
a. Lead-nickle-tin
b. Lead-aluminium-copper
c. Lead-antimony-tin-silver
d. Lead-antimony-tin-copper
e. Lead-copper-tin-copper
Q. The solid solution carbon in alpha iron obtained on cooling of 0.2% carbon steel which have been heated above the third critical point is called
a. Austenite
b. Pearlite
c. Ferrite
d. Ferrite
e. Cementite
Q. Corrosion resistance of steels is increased by the addition of alloying elements like
a. Tungsten
b. Chromium and nickel
c. Cobalt and vanadium
d. Silicon and sulphur
e. Sulphur