Solapur University M.Sc Nano Technology (Semester-IV) Paper on Polymers & Nanocomposites March 2019
| Sr. No. | Question |
| 1 | _________does not combine with fiber to give composites.
(a) Metals (b) Ceramics (c) Non – metals (d) Polymers |
| 2 | _______ type of composite is NOT classified under the category of number of layers.
(a) Unidirectional fibre reinforced (b) Laminar (c) Sandwich panels (d) Glass-fibre reinforced |
| 3 | One of the most popular types of core material used is ____
(a) Metal foam (b) Honeycomb (c) Glass (d) Plastic |
| 4 | The flexural stiffness of the sandwich panel is proportional to the ________ of core thickness
(a) Square (b) Square root (c) Inverse (d) Cube |
| 5 | Major load carrier in dispersion-strengthened composites _______
(a) Matrix (b) Fiber (c) Both (d) Can’t define |
| 6 | Al-alloys for engine/automobile parts are reinforced to increase their ________
(a) Strength (b) Wear resistance (c) Elastic modulus (d) Fiber length |
| 7 | Longitudinal strength of fiber reinforced composite is mainly influenced by _________
(a) Fiber strength (b) Fiber orientation (c) Fiber volume fraction (d) Fiber length |
| 8 | Major ingredients of traditional ceramics ______
(a) Silica (b) Clay (c) Feldspar (d) All |
| 9 | Hot isostatic pressing is not a viable option if the chief criterion is _________
(a) Strength without grain growth (b) Lost cost (c) Zero porosity (d) Processing refractory ceramics |
| 10 | The following ceramic product is mostly used as pigment in paints ________
(a) TiO2 (b) SiO2 (c) UO2 (d) ZrO2 |
| 11 | The word ‘ceramic’ meant for _______
(a) Soft material (b) Hard material (c) Burnt material (d) Dry material |
| 12 | During sintering densification is not due to _______
(a) Atomic diffusion (b) Surface diffusion (c) Bulk diffusion (d) Grain growth |
| 13 | When fibers are used as a dispersed phase for the reinforcement of matrices, the resultant composites are known as __________
(a) Glass-fiber reinforced (b) Carbon-fiber reinforced (c) Wood-fiber reinforced (d) Unidirectional-fiber reinforced |
| 14 | __________is not a characteristic of glass – fiber reinforced composites
(a) Low density (b) Low impact resistance (c) High tensile strength (d) Excellent chemical and corrosion resistance |
| Published on 30th Sept 2021 | |
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