Top 350+ Solved Engineering Materials MCQ Questions Answer
Q. The ability of material to absorb a large amount of energy is
a. Malleability
b. Resilience
c. Toughness
d. Ductility
e. Hardness
Q. Porous materials generally
a. Transmit sound
b. Isentropic material
c. Absorb most of the sound
d. Reflect entire sound
Q. A body which does not contain voids or empty spaces is known as
a. Continuous body
b. An isotropic body
c. Heterogeneous body
d. Crystalline body
e. None of the above
Q. A non-crystalline polymer which can be stretched to more than twice its original length and which contracts quickly on releasing the load, is known as
a. copolymer
b. dilatant
c. plastic
d. elastomer
e. None of the above
Q. For better fuuidity of the molten metal, the following is added in blast furnace
a. Line
b. Carbon
c. Sulphur
d. Manganese
e. Oil
Q. Lead is used for joining pipes made of
a. Cast iron
b. Cold iron steel
c. Concrete
d. Asbestos cement
e. Vitrified clay
Q. Laser is a device to produce
a. Beam of white light
b. Beam of monochromatic light
c. Coherent light
d. X-rays
e. Microwaves
Q. Which of the following has the highest malleability?
a. Brass
b. Cast iron
c. Copper
d. Aluminium
e. Lead
Q. Notches in a section produce
a. Compressive stress
b. Shear stresses
c. Biaxial tensile stresses
d. Tri-axial tensile stresses
e. None of the above
Q. In induction hardening
a. Only d.c. supply is used
b. The power factor is high
c. The voltage is high
d. The frequency is high
e. The current is high
Q. Burger's vector is
a. estimation of force9 of substit9utional atoms
b. a defect in crystall structure
c. a property of dislocations
d. None of the above
e. None of the above
Q. German silver is an alloy of
a. Silver, gold and platinum
b. Silver, copper and niclel
c. Nickel, copper and zinc
d. Silver with impurities below 1%
e. Silver, copper and lead
Q. The atomic number of a certain element is 83. An atom of this element must contain
a. 42 protons and 41 electrons
b. 83 neutrous
c. 1 neutron, 41 electrons and 41 protons
d. 83 electrons
e. None of the above is valid
Q. The electrical resistance of a semi-conductor
a. Increases with temperature
b. Decreases with temperature
c. Does not change with temperature
d. None of the above