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MCQs

Total Questions : 57 | Page 1 of 6 pages
Question 1. The continuous phase of a composite material is known as its _______
  1.    dispersed phase
  2.    surrounding phase
  3.    matrix phase
  4.    fiber phase
 Discuss Question
Answer: Option C. -> matrix phase
Answer: (c).matrix phase
Question 2. Kevlar is a ______ type of material.
  1.    Glass
  2.    Thermoplastic
  3.    Whisker
  4.    Polymer
 Discuss Question
Answer: Option D. -> Polymer
Answer: (d).Polymer
Question 3. Which of the following materials are common for whiskers?
  1.    Graphite, silicon carbide
  2.    Glass, boron
  3.    Steel, tungsten
  4.    Polymers, ceramics
 Discuss Question
Answer: Option A. -> Graphite, silicon carbide
Answer: (a).Graphite, silicon carbide
Question 4. The classification of fibers having thin crystals is known as _______
  1.    Whisker
  2.    Fiber
  3.    Wires
  4.    Matrix
 Discuss Question
Answer: Option A. -> Whisker
Answer: (a).Whisker
Question 5. Which of the following is not a characteristic trait of composite materials?
  1.    High strength, toughness, modulus
  2.    Lightweight
  3.    Easy to assemble
  4.    Sensitive to temperature change
 Discuss Question
Answer: Option D. -> Sensitive to temperature change
Answer: (d).Sensitive to temperature change
Question 6. How much SiO₂ is present in the glass which is drawn into fibers?
  1.    55%
  2.    15%
  3.    10%
  4.    4%
 Discuss Question
Answer: Option A. -> 55%
Answer: (a).55%
Question 7. Manufacturing of components having continuous lengths and the constant cross-sectional shape is done by _____ process.
  1.    Roving
  2.    Pultrusion
  3.    Curing
  4.    Pulling
 Discuss Question
Answer: Option B. -> Pultrusion
Answer: (b).Pultrusion
Question 8. What is the purpose of fiberglass that is made as a thread?
  1.    Insulating material
  2.    Conductive material
  3.    Heat resistant
  4.    Cloth
 Discuss Question
Answer: Option D. -> Cloth
Answer: (d).Cloth
Question 9. What amount of principle reinforcement materials is used in pultrusion process?
  1.    10-20%
  2.    25-35%
  3.    40-70%
  4.    75-90%
 Discuss Question
Answer: Option C. -> 40-70%
Answer: (c).40-70%
Question 10. Fiberglass materials have a usable temperature up to ______
  1.    50°C
  2.    100°C
  3.    200°C
  4.    500°C
 Discuss Question
Answer: Option C. -> 200°C
Answer: (c).200°C

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