Metallurgy Set 10

Mechanical Engineering

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This set of Metallurgy Multiple Choice Questions & Answers (MCQs) focuses on Metallurgy Set 10

Q1 | Slow plastic deformation of metals under a constant stress is known as
  • Endurance failure
  • Proof deformation
  • Creep
  • Gradual deformation
  • Fatigue
Answer: Creep
Q2 | The chemical formula of cementite is
  • FeC3
  • Fe2C3
  • FeC
  • Fe3C2
  • Fe3C
Answer: Fe3C
Q3 | A steel specimen is heated to 730?C and cooled at the slowest possible rate in the furnace. Which property will be imparted to the steel piece?
  • Low specific heat of quenching oil
  • Tempering
  • Softness
  • Toughness
  • Hardness
Answer: Softness
Q4 | Insufficient hardness after tempering may be due to
  • tempering temperature too low
  • tempering temperature too high
  • oxidising atmosphere in the furnace
  • Any of the above
  • Low specific heat of quenching oil
Answer: tempering temperature too high
Q5 | Which of the following element has hexagonal close packed structure?
  • Molybdenum
  • Cadmium
  • Chromium
  • Lead
  • Aluminium
Answer: Cadmium
Q6 | Brass in an alloy of
  • Copper and lead
  • Copper and tin
  • Copper and nickel
  • Copper and aluminium
  • Copper and zinc
Answer: Copper and zinc
Q7 | Which of the following metals has highest specific gravity?
  • Silver
  • Copper
  • Iron
  • Aluminium
  • Brass
Answer: Silver
Q8 | Which of the following material is generally not used as deoxidiser for producing killed steel?
  • Copper
  • Ferro-silicon
  • Ferro-manganese
  • Aluminium
  • All of the above
Answer: Copper
Q9 | The net magnetic moment is zero is case of
  • Ferromagnetic materials
  • Ferrimagnetic materials
  • Anti-ferromagnetic materials
  • All of the above
  • None of the above
Answer: Anti-ferromagnetic materials
Q10 | In Brinell hardness tester the load for aluminium is
  • 1000 kg
  • 500 kg
  • 300 kg
  • 100 kg
  • 1500 kg
Answer: 500 kg
Q11 | The nature of atomic bond found in diamond is
  • Ionic
  • Covalent
  • Metallic
  • Either of above
  • None of the above
Answer: Covalent
Q12 | Annealing treatment is normally used for
  • Forgings
  • Cold worked sheets
  • Wires
  • Castings
  • All of the above
Answer: All of the above
Q13 | During dielectric heating, the heat is generated primarily due to
  • Eddy currents
  • High voltage
  • High flux density
  • High power consumption
  • Stray magnetic fields
Answer: Eddy currents
Q14 | For each ton of pig iron produced in a blast furnace, the amount of ore used is approximately.
  • 1 ton
  • 13 tons
  • 5 tons
  • 2 tons
  • 12.5 tons
Answer: 2 tons
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