McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
| 1. |
the study of different pattern formation of atoms is called as |
| A. | metallurgy |
| B. | crystallography |
| C. | physics |
| D. | none of the above |
| Answer» B. crystallography | |
| 2. |
crystallography is study of |
| A. | pattern formation of electrons |
| B. | pattern formation of electrons |
| C. | different pattern formation of atoms |
| D. | none of the above |
| Answer» C. different pattern formation of atoms | |
| 3. |
crystal structure is arrangement of in differeny patterns |
| A. | electrons |
| B. | protons |
| C. | atoms |
| D. | crystals |
| Answer» C. atoms | |
| 4. |
a crystalline material must have |
| A. | repetitive arrangement of atoms in any one direction |
| B. | repetitive arrangement of atoms in any two direction |
| C. | repetitive arrangement of atoms in any three direction |
| D. | none of the above |
| Answer» C. repetitive arrangement of atoms in any three direction | |
| 5. |
a non-crystalline material is characterized as having |
| A. | repetitive arrangement of atoms in all three direction |
| B. | non- repetitive arrangement of atoms in all three direction |
| C. | repetitive arrangement of atoms in any one direction |
| D. | none of the above |
| Answer» B. non- repetitive arrangement of atoms in all three direction | |
| 6. |
a material having non repititive arrangement of atoms over larger atomic distance is called |
| A. | crystalline material |
| B. | non crystalline material |
| C. | solid material |
| D. | liquid material |
| Answer» B. non crystalline material | |
| 7. |
a material having repititive arrangement of atoms over larger atomic distance is called |
| A. | crystalline material |
| B. | non crystalline material |
| C. | solid material |
| D. | liquid material |
| Answer» A. crystalline material | |
| 8. |
examples of crystalline materials are |
| A. | liquids |
| B. | most metals |
| C. | most polymers |
| D. | none of the above |
| Answer» B. most metals | |
| 9. |
out of the following is non crystalline material |
| A. | most metals |
| B. | most polymers |
| C. | most ceramics |
| D. | none of the above |
| Answer» B. most polymers | |
| 10. |
Metals are type of materials |
| A. | noncrystalli ne |
| B. | crystalline |
| C. | both a and b |
| D. | none of the above |
| Answer» B. crystalline | |
| 11. |
most polymers are type of materials |
| A. | noncrystalli ne |
| B. | crystalline |
| C. | both a and b |
| D. | none of the above |
| Answer» A. noncrystalli ne | |
| 12. |
for purpose of study of crystal structures, atoms are assumed as |
| A. | simple cubes |
| B. | 2 dimensional circles |
| C. | 3 dimensional spheres |
| D. | simple hexagons |
| Answer» C. 3 dimensional spheres | |
| 13. |
the smallest representation of geometry of crystal structure of a material is called |
| A. | crystal lattice |
| B. | unit cell |
| C. | crystal structure |
| D. | crystal |
| Answer» B. unit cell | |
| 14. |
the arrengement of multiple unit cells toghether is called |
| A. | unit cell |
| B. | crystal structure |
| C. | lattice constants |
| D. | lattice angle |
| Answer» B. crystal structure | |
| 15. |
a unit cell represents of a crystal strtucture |
| A. | weight |
| B. | size |
| C. | geometry |
| D. | none of the above |
| Answer» C. geometry | |
| 16. |
the represents arrangemnet of unit cells in 3 dimensional axes |
| A. | lattice constant |
| B. | lattice angle |
| C. | lattice structure |
| D. | none of the above |
| Answer» C. lattice structure | |
| 17. |
lattice structure represents arrengement of unit cells in |
| A. | 2 dimensional axes system |
| B. | 3 dimensional system |
| C. | orthographi c system |
| D. | none of the above |
| Answer» B. 3 dimensional system | |
| 18. |
the constant distance between adjacent atoms of unit cell is called as |
| A. | unit cell |
| B. | lattice angle |
| C. | crystal |
| D. | lattice constant |
| Answer» D. lattice constant | |
| 19. |
lattice constant represents |
| A. | distance between adjacent atoms of unit cell |
| B. | distance between adjacent unit cell |
| C. | angle between edges of unit cell |
| D. | geometry of crystal structures |
| Answer» A. distance between adjacent atoms of unit cell | |
| 20. |
the angle between two lattice parameters of unit cell is called as - |
| A. | unit cell |
| B. | lattice angle |
| C. | crystal |
| D. | lattice constant |
| Answer» B. lattice angle | |
| 21. |
lattice angle represents |
| A. | distance between adjacent atoms of unit cell |
| B. | distance between adjacent unit cell |
| C. | angle between two lattice parameters of unit cell |
| D. | geometry of crystal structures |
| Answer» C. angle between two lattice parameters of unit cell | |
| 22. |
crystal system classifies crystal structure according to |
| A. | size of unit cell |
| B. | weight of unit cell |
| C. | geometry of unit cell |
| D. | both a and b |
| Answer» C. geometry of unit cell | |
| 23. |
the geometry of unit cell can be completely defiened by _ |
| A. | weight of unit cell |
| B. | 3 edges length of unit cell (a,b&c) |
| C. | three interaxial angles of unit cell |
| D. | both b and c |
| Answer» D. both b and c | |
| 24. |
a simple cubic crystal structure consists of |
| A. | a=b=c |
| B. | a=b≠c |
| C. | α=β=γ=900 |
| D. | both a and c |
| Answer» D. both a and c | |
| 25. |
A hexagonal closed pack crystal structure consists of |
| A. | a=b≠c |
| B. | α=β=90 0, γ=1200 |
| C. | α=β=γ=900 |
| D. | both a and b |
| Answer» D. both a and b | |
| 26. |
indexong or designation in a unit cell can be done for a particular |
| A. | point location |
| B. | direction |
| C. | plane |
| D. | all of the above |
| Answer» D. all of the above | |
| 27. |
the basis of determining index values for a simple cubic structure is unit cell |
| A. | 2 dimensional |
| B. | 3 dimensional |
| C. | both a and b |
| D. | none of the above |
| Answer» B. 3 dimensional | |
| 28. |
circular parenthesis symbolically represents |
| A. | crystallogra phic point locations |
| B. | crystaloogra phic directions |
| C. | crystallogra phic planes |
| D. | none of the above |
| Answer» C. crystallogra phic planes | |
| 29. |
square brackets symbolocally represents crystallographic - |
| A. | crystallogra phic point locations |
| B. | crystaloogra phic directions |
| C. | crystallogra phic planes |
| D. | none of the above |
| Answer» B. crystaloogra phic directions | |
| 30. |
out of the following is used for reprenstation of Miller Indices for a single plane |
| A. | {} |
| B. | [] |
| C. | () |
| D. | none of the above |
| Answer» C. () | |
| 31. |
out of the following is used for reprenstation of Miller Indices for a single direction |
| A. | {} |
| B. | [] |
| C. | () |
| D. | none of the above |
| Answer» B. [] | |
| 32. |
in any cubic crustal structure the corner atoms shared by adjacent unit cells |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» D. 8 | |
| 33. |
in face centered cubic crystal structure the face atom is shared by adjacent unit cells |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» B. 2 | |
| 34. |
in body centered cubic structure the center atom is shared by adjacent unit cells |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 0 |
| Answer» D. 0 | |
| 35. |
in cubic crystal structure, the located atom is shared by 8 adjacent unit cells |
| A. | center |
| B. | face |
| C. | corner |
| D. | none of the above |
| Answer» C. corner | |
| 36. |
A higher value of average number of atoms per unit cell indicates |
| A. | bigger size of materials |
| B. | higher density of materials |
| C. | lower density of materials |
| D. | none of the above |
| Answer» B. higher density of materials | |
| 37. |
co-ordination number is also referred to as |
| A. | ligancy number |
| B. | average number of atoms per unit cell |
| C. | atomic packing factor |
| D. | none of the above |
| Answer» A. ligancy number | |
| 38. |
is defined as number of atoms adjacent to and touching a central atoms under consideration |
| A. | co- ordination number |
| B. | average number of atoms per unit cell |
| C. | atomic packing factor |
| D. | none of the above |
| Answer» A. co- ordination number | |
| 39. |
a higher value of coordination number indicates |
| A. | bigger size of materials |
| B. | higher density of materials |
| C. | lower density of materials |
| D. | none of the above |
| Answer» B. higher density of materials | |
| 40. |
is defined as fraction of volume occupied by atoms in unit cell |
| A. | ligancy number |
| B. | average number of atoms per unit cell |
| C. | atomic packing factor |
| D. | none of the above |
| Answer» C. atomic packing factor | |
| 41. |
APN is defined as |
| A. | ratio of volume occupied by atoms in unit cell to volume of unit cell |
| B. | ratio of volume of unit cell to volume occupied by atoms in unit cell |
| C. | ratio of volume of unit cell to volume of crystal structure |
| D. | none of the above |
| Answer» A. ratio of volume occupied by atoms in unit cell to volume of unit cell | |
| 42. |
a higher value of APN number indicates |
| A. | bigger size of materials |
| B. | higher density of materials |
| C. | higher value of averagge niumber of atoms per unit cell |
| D. | both b and c |
| Answer» D. both b and c | |
| 43. |
in simple cubic crystal structure there are number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» C. 8 | |
| 44. |
in simple cubic crystal structure there are number of face atom |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | none of the above |
| Answer» D. none of the above | |
| 45. |
in simple cubic crystal structure there are number of center atom |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» D. 0 | |
| 46. |
in simple cubic crystal structure, the average number of atoms per unit cell is |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» A. 1 | |
| 47. |
in a cubic crystal structure, the average number of atoms per unit cell is 1 |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» A. simple cubic | |
| 48. |
in simple cubic crystal structure, the relationsheep between lattice constant and radius of atom is given by |
| A. | a=r/2 |
| B. | r=a/2 |
| C. | r=√3a/4 |
| D. | r=√3r/4 |
| Answer» B. r=a/2 | |
| 49. |
the average packing factor for simple cubic crystal is given as |
| A. | 0.52 |
| B. | 0.68 |
| C. | 0.74 |
| D. | 0.85 |
| Answer» A. 0.52 | |
| 50. |
the coordination number for simple cubic structure is given as |
| A. | 6 |
| B. | 8 |
| C. | 12 |
| D. | 14 |
| Answer» A. 6 | |
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