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MCQs

Total Questions : 40 | Page 2 of 4 pages
Question 11. What effect do thermal variations in volume have on a body?
  1.    Expansion
  2.    Contraction
  3.    Cracking
  4.    Phase transformation
 Discuss Question
Answer: Option C. -> Cracking
Answer: (c).Cracking
Question 12. The temperature at which plastics begin to become softer and defer under a load is known as _________
  1.    Softening point
  2.    Melting point
  3.    Eutectic point
  4.    Heat distortion point
 Discuss Question
Answer: Option D. -> Heat distortion point
Answer: (d).Heat distortion point
Question 13. What is the electrical resistivity of Copper?
  1.    1.59 * 10⁻⁸
  2.    1.68 * 10⁻⁸
  3.    2.65 * 10⁻⁸
  4.    5.9 * 10⁻⁸
 Discuss Question
Answer: Option B. -> 1.68 * 10⁻⁸
Answer: (b).1.68 * 10⁻⁸
Question 14. What is the electrical conductivity of Aluminum?
  1.    6.3 * 10⁷
  2.    5.9 * 10⁷
  3.    3.5 * 10⁷
  4.    1 * 10⁷
 Discuss Question
Answer: Option C. -> 3.5 * 10⁷
Answer: (c).3.5 * 10⁷
Question 15. What is the attribute of a material which resists the flow of electricity known?
  1.    Conductivity
  2.    Thermoelectricity
  3.    Dielectric strength
  4.    Resistivity
 Discuss Question
Answer: Option D. -> Resistivity
Answer: (d).Resistivity
Question 16. The ability of a metal which helps it to form a smooth cast is known as ______
  1.    Machinability
  2.    Formability
  3.    Solderability
  4.    Castability
 Discuss Question
Answer: Option D. -> Castability
Answer: (d).Castability
Question 17. What is the machinability index of soft cast iron?
  1.    100
  2.    30
  3.    80
  4.    70
 Discuss Question
Answer: Option C. -> 80
Answer: (c).80
Question 18. Which of the following is an application of Tin solder 35?
  1.    Tinning and filling of seams
  2.    Plumbing
  3.    Secondary soldering
  4.    For materials which are difficult to solder
 Discuss Question
Answer: Option B. -> Plumbing
Answer: (b).Plumbing
Question 19. How is Young’s modulus of elasticity defined?How Is Young’s Modulus Of Elasticity Defined?
  1.    a
  2.    b
  3.    c
  4.    d
 Discuss Question
Answer: Option C. -> c
Answer: (c).c
Question 20. Which property helps a material to absorb lubricants?
  1.    Density
  2.    Porosity
  3.    Soldering
  4.    Absorptivity
 Discuss Question
Answer: Option B. -> Porosity
Answer: (b).Porosity

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