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MCQs

Total Questions : 1977 | Page 193 of 198 pages
Question 1921. __________ alloys have the highest specific strength of all the structural materials out of the following.
  1.    Titanium
  2.    Chromium
  3.    Magnesium
  4.    Magnetic steel
 Discuss Question
Answer: Option A. -> Titanium
Question 1922. Slow plastic deformation of metals under a constant stress is termed as __________ failure.
  1.    None of these
  2.    Endurance
  3.    Fatigue
  4.    Creep
 Discuss Question
Answer: Option D. -> Creep
Question 1923. Vycor, a widely used material for making 'thermal wells' in temperature measurement, is a
  1.    Thermosetting plastic
  2.    Cermet
  3.    Glass
  4.    Metallic alloy
 Discuss Question
Answer: Option C. -> Glass
Question 1924. Electronic structure of a material is generally studied by
  1.    Spectroscopic techniques
  2.    Metallurgical microscope
  3.    Electron diffraction
  4.    X-ray
 Discuss Question
Answer: Option A. -> Spectroscopic techniques
Question 1925. A metallic alloy in general as compared to their pure metal components is
  1.    Having higher melting point
  2.    Having lower hardness, reactivity and fusibility
  3.    More corrosion resistant
  4.    Having lower electrical conductivity
 Discuss Question
Answer: Option C. -> More corrosion resistant
Question 1926. Tin vessels are corroded by
  1.    None of these
  2.    Anhydrous ammonia
  3.    Synthetic detergent solution
  4.    Aromatic solvents
 Discuss Question
Answer: Option A. -> None of these
Question 1927. Tin coating is not done by
  1.    Electro deposition
  2.    Hot dipping
  3.    Spraying
  4.    Vaporising
 Discuss Question
Answer: Option D. -> Vaporising
Question 1928. Which of the following is the hardest?
  1.    Cementite
  2.    Ferrite
  3.    Pearlite
  4.    Austenite
 Discuss Question
Answer: Option D. -> Austenite
Question 1929. Thermosetting polymers are
  1.    None of these
  2.    Extruded
  3.    Cast molded
  4.    Injection moulded
 Discuss Question
Answer: Option C. -> Cast molded
Question 1930. Most suitable material for high pressure vessel operating at 500 atm. and 500° C is
  1.    18/8 stainless steel
  2.    High silicon iron (14% Si)
  3.    Molybdenum stainless steel
  4.    Mild steel
 Discuss Question
Answer: Option C. -> Molybdenum stainless steel

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