MCQOPTIONS
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MCQOPTIONS
This section includes 16 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Behaviour knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Glazes are alumina mixtures. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
In following options, what is not a purpose of glazing? |
| A. | Introduce residual surface compressive stress |
| B. | Make ceramic impermeable to liquid |
| C. | Make article attractive |
| D. | Coarsening of grain size |
| Answer» E. | |
| 3. |
Tempered glass consists __________ stresses at center and _______ at the surface. |
| A. | Tensile, tensile |
| B. | Tensile, compressive |
| C. | Compressive, tensile |
| D. | Compressive, compressive |
| Answer» C. Compressive, tensile | |
| 4. |
__________ glass is thermally strengthened glass. |
| A. | Quenched |
| B. | Tempered |
| C. | Ceramic |
| D. | Polycrystalline |
| Answer» C. Ceramic | |
| 5. |
TEMPERED_GLASS_CONSISTS____________STRESSES_AT_CENTER_AND_________AT_THE_SURFACE.?$ |
| A. | Tensile, tensile |
| B. | Tensile, compressive |
| C. | Compressive, tensile |
| D. | Compressive, compressive |
| Answer» C. Compressive, tensile | |
| 6. |
Glazes are alumina mixtures.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
In_following_options,_what_is_not_a_purpose_of_glazing?$ |
| A. | Introduce residual surface compressive stress |
| B. | Make ceramic impermeable to liquid |
| C. | Make article attractive |
| D. | Coarsening of grain size |
| Answer» E. | |
| 8. |
Ion implantation causes improvement in fracture toughness and fatigue strength. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
__________ glass is thermally strengthened glass? |
| A. | Quenched |
| B. | Tempered |
| C. | Ceramic |
| D. | Polycrystalline |
| Answer» C. Ceramic | |
| 10. |
Smaller the grain size ____________ will be the fracture stress. |
| A. | Higher |
| B. | Lower |
| C. | Constant |
| D. | Can’t say |
| Answer» B. Lower | |
| 11. |
Surface compressive stresses enhance ______________ of ceramic. |
| A. | Thermal shock resistance |
| B. | Volume |
| C. | Ductility |
| D. | Grain boundary area |
| Answer» B. Volume | |
| 12. |
The strength ____________ with increasing the volume fraction of pores. |
| A. | Linearly decreases |
| B. | Linearly increases |
| C. | Exponentially increases |
| D. | Exponentially decreases |
| Answer» E. | |
| 13. |
Presence of pores in ceramics ____________ the true cross-section over which the applied load is acting. |
| A. | Increase |
| B. | Decrease |
| C. | Doesn’t change |
| D. | Can increase or decrease |
| Answer» B. Decrease | |
| 14. |
What is the common process of fabrication of ceramics? |
| A. | Sintering |
| B. | Rolling |
| C. | Forging |
| D. | Casting |
| Answer» B. Rolling | |
| 15. |
Low tensile strength of ceramics is related to ___________ |
| A. | Dislocations |
| B. | Structural defects |
| C. | Grain boundaries |
| D. | Vacancy |
| Answer» C. Grain boundaries | |
| 16. |
In general, ceramics fail under ___________ stress. |
| A. | Shear |
| B. | Compressive |
| C. | Tensile |
| D. | Normal |
| Answer» D. Normal | |