MCQOPTIONS
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MCQOPTIONS
This section includes 21 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is an application of glass-fiber reinforced composites? |
| A. | Adhesives |
| B. | Conveyor belts |
| C. | Design of ships |
| D. | Automotive parts |
| Answer» E. | |
| 2. |
Which of the following 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 |
| Answer» C. High tensile strength | |
| 3. |
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 |
| Answer» B. Carbon-fiber reinforced | |
| 4. |
Which of the following is not an application of a sandwich panel? |
| A. | Fabrication of wings of aircrafts |
| B. | Design of ships, boat hulls |
| C. | Conveyor belts |
| D. | Fabrication of roofs, floors and walls of buildings |
| Answer» D. Fabrication of roofs, floors and walls of buildings | |
| 5. |
The flexural stiffness of the sandwich panel is proportional to the _____________ of core thickness. |
| A. | Square |
| B. | Square root |
| C. | Inverse |
| D. | Cube |
| Answer» E. | |
| 6. |
One of the most popular types of core material used is ____________ |
| A. | Metal foam |
| B. | Honeycomb |
| C. | Glass |
| D. | Plastic |
| Answer» C. Glass | |
| 7. |
What is the aspect ratio? |
| A. | Length to diameter ratio |
| B. | Length to depth ratio |
| C. | Depth to length ratio |
| D. | Diameter to length ratio |
| Answer» B. Length to depth ratio | |
| 8. |
WHICH_OF_THE_FOLLOWING_IS_NOT_AN_APPLICATION_OF_SANDWICH_PANEL??$ |
| A. | Fabrication of wings of aircrafts |
| B. | Design of ships, boat hulls |
| C. | Conveyor belts |
| D. | Fabrication of roofs, floors and walls of buildings |
| Answer» D. Fabrication of roofs, floors and walls of buildings | |
| 9. |
Which of the following 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 |
| Answer» C. High tensile strength | |
| 10. |
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 |
| Answer» B. Carbon-fiber reinforced | |
| 11. |
The principal applications of composites are in transportation industry, consumer products and industrial and scientific equipment. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Which of the following is not an advantage of composites? |
| A. | Easy to manufacture and durable |
| B. | Excellent thermal, mechanical and chemical properties |
| C. | Heavy-weight and non-versatile |
| D. | Economical and tailor made |
| Answer» D. Economical and tailor made | |
| 13. |
Which of the following is used as reinforcement in advanced polymer matrix composite? |
| A. | Glass-fiber reinforced |
| B. | Carbon-fiber reinforced |
| C. | Wood-fiber reinforced |
| D. | Unidirectional-fiber reinforced |
| Answer» C. Wood-fiber reinforced | |
| 14. |
Which of the following is an application of glass-fiber reinforced composites? |
| A. | Adhesives |
| B. | Conveyor belts |
| C. | Design of ships |
| D. | Automotive parts |
| Answer» E. | |
| 15. |
The flexural stiffness of the sandwich panel is proportional to the _____________ of core thickness? |
| A. | Square |
| B. | Square root |
| C. | Inverse |
| D. | Cube |
| Answer» E. | |
| 16. |
One of the most popular types of core material used is |
| A. | Metal foam |
| B. | Honeycomb |
| C. | Glass |
| D. | Plastic |
| Answer» C. Glass | |
| 17. |
The matrix phase controls the environmental resistance of the composites. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 18. |
Which of the following 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 |
| Answer» E. | |
| 19. |
What is aspect ratio? |
| A. | Length to diameter ratio |
| B. | Length to depth ratio |
| C. | Depth to length ratio |
| D. | Diameter to length ratio |
| Answer» B. Length to depth ratio | |
| 20. |
Which of the following is not a property of matrix materials which are modified by adding particulate fillers? |
| A. | Improved performance at elevated temperature |
| B. | Decrease in surface hardness |
| C. | Modification in electrical conductivity |
| D. | Improved abrasion resistance |
| Answer» C. Modification in electrical conductivity | |
| 21. |
Which of the following does not combine with fiber to give composites? |
| A. | Metals |
| B. | Ceramics |
| C. | Non-metals |
| D. | Polymers |
| Answer» D. Polymers | |