McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
| 301. |
In FCC, the lattice parameter (a) is |
| A. | (4/√3) r |
| B. | 4/√3 r |
| C. | (4/√2) r |
| D. | 4/√2 r |
| Answer» C. (4/√2) r | |
| 302. |
In geometrical hardening, at the beginning λ is |
| A. | less than 45° |
| B. | more than 35° |
| C. | more than 45° |
| D. | less than 35° |
| Answer» A. less than 45° | |
| 303. |
In geometrical softening, at the beginning λ is |
| A. | less than 45° |
| B. | more than 35° |
| C. | more than 45° |
| D. | less than 35° |
| Answer» B. more than 35° | |
| 304. |
In hot working force required is than cold working |
| A. | greater |
| B. | less |
| C. | equal |
| D. | can’t say |
| Answer» B. less | |
| 305. |
In hot working microstructure is |
| A. | distorted |
| B. | equiaxed |
| C. | refined |
| D. | both b & c |
| Answer» D. both b & c | |
| 306. |
In vacancy point defects, stress field produced in the vicinity. |
| A. | tension |
| B. | shear |
| C. | compression |
| D. | all |
| Answer» A. tension | |
| 307. |
Indexing 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 | |
| 308. |
Inter atomic distance is more the dislocation line in negative edge dislocation |
| A. | above |
| B. | below |
| C. | right side of |
| D. | left side of |
| Answer» A. above | |
| 309. |
Inter atomic distance is more the dislocation line in positive edge dislocation |
| A. | above |
| B. | below |
| C. | right side of |
| D. | left side of |
| Answer» B. below | |
| 310. |
It is a type of Twin |
| A. | annealing |
| B. | tempering |
| C. | normalising |
| D. | hardening |
| Answer» A. annealing | |
| 311. |
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 structure |
| Answer» A. distance between adjacent atoms of unit cell | |
| 312. |
Lattice structure represents arrangement of unit cells in |
| A. | 2- dimensional axes system |
| B. | 3- dimensional axes system |
| C. | orthographi c system |
| D. | none of the above |
| Answer» B. 3- dimensional axes system | |
| 313. |
Ligancy number for HCP is |
| A. | 6 |
| B. | 12 |
| C. | 4 |
| D. | 8 |
| Answer» B. 12 | |
| 314. |
Material having cohesive strength shows large plastic deformation |
| A. | high |
| B. | low |
| C. | constant |
| D. | none of the above |
| Answer» A. high | |
| 315. |
Material having CRSS shows large plastic deformation |
| A. | high |
| B. | low |
| C. | constant |
| D. | none of the above |
| Answer» B. low | |
| 316. |
Miller indices of the line of intersection of (⎯ 1⎯ 11) and (110) are |
| A. | [110] |
| B. | [101] |
| C. | [10-1] |
| D. | [-110] |
| Answer» D. [-110] | |
| 317. |
Minimum number of slip systems that must be operative during plastic deformation |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 318. |
Most polymers are type of materials |
| A. | non- crystalline |
| B. | crystalline |
| C. | both a & b |
| D. | none of the above |
| Answer» A. non- crystalline | |
| 319. |
Negative screw dislocation is represented by |
| A. | ┴ |
| B. | 0 |
| C. | 0 |
| D. | ┬ |
| Answer» D. ┬ | |
| 320. |
No. of atoms in Body-Centered Cubic structure are ….. |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» B. 2 | |
| 321. |
No. of atoms in hexagon close packed structure are ….. |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 6 |
| Answer» D. 6 | |
| 322. |
No.of atoms in FCCstructure are ….. |
| A. | 2 |
| B. | 1 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 323. |
Oxidation of metals occurs during cold working. |
| A. | true |
| B. | false |
| C. | 0 |
| D. | 0 |
| Answer» B. false | |
| 324. |
Plastic deformation results from the following. |
| A. | edge dislocation |
| B. | screw dislocations |
| C. | mixed dislocations |
| D. | all of the above |
| Answer» D. all of the above | |
| 325. |
Poor surface finish in………process |
| A. | cold working |
| B. | hot working |
| C. | casting |
| D. | welding |
| Answer» B. hot working | |
| 326. |
Positive screw dislocation is represented by |
| A. | ┴ |
| B. | 0 |
| C. | 0 |
| D. | ┬ |
| Answer» A. ┴ | |
| 327. |
Recrystallisation temperature of Iron is ……….. |
| A. | 727 °c |
| B. | 775 °c |
| C. | 800 °c |
| D. | 700 °c |
| Answer» A. 727 °c | |
| 328. |
Recrystallization rate varies in the following manner with temperature |
| A. | linearly increasing |
| B. | linearly decreasing |
| C. | exponential |
| D. | logarithmic |
| Answer» C. exponential | |
| 329. |
Repeatable entity of a crystal structure is known as |
| A. | crystal |
| B. | lattice |
| C. | unit cell |
| D. | miller indices |
| Answer» C. unit cell | |
| 330. |
Requirement for cross-slip movement of dislocation |
| A. | preferred slip plane |
| B. | preferred slip direction |
| C. | no preferred slip plane |
| D. | no preferred slip direction |
| Answer» C. no preferred slip plane | |
| 331. |
Round brackets are used to represent crystallographic |
| A. | point location |
| B. | direction |
| C. | plane |
| D. | none of the above |
| Answer» C. plane | |
| 332. |
Schottky defect found in |
| A. | metal |
| B. | non-metal |
| C. | ionic |
| D. | plastics |
| Answer» C. ionic | |
| 333. |
Schottky defect have missing of |
| A. | cation |
| B. | anion |
| C. | electron |
| D. | both a&b |
| Answer» D. both a&b | |
| 334. |
Schottky-defect in ceramic material is |
| A. | interstitial impurity |
| B. | vacancy- interstitial pair of cations |
| C. | pair of nearby cation and anion vacancies |
| D. | substitution al impurity |
| Answer» C. pair of nearby cation and anion vacancies | |
| 335. |
Schottky-defect is of this type. |
| A. | point |
| B. | line |
| C. | volume |
| D. | surface |
| Answer» A. point | |
| 336. |
screw dislocations have burger vector for dislocation line |
| A. | perpendicul ar |
| B. | parallel |
| C. | inclined |
| D. | first perpendicul ar then parallel |
| Answer» A. perpendicul ar | |
| 337. |
screw dislocations includes |
| A. | tension lattice strain |
| B. | compression lattice strain |
| C. | shear lattice strain |
| D. | all |
| Answer» C. shear lattice strain | |
| 338. |
Sharp break in dislocation line that is in slip plane . |
| A. | jog |
| B. | kink |
| C. | either jog or kink |
| D. | none |
| Answer» B. kink | |
| 339. |
slip plane orientation after grain boundary |
| A. | by pass |
| B. | crosses |
| C. | change |
| D. | none of the above |
| Answer» C. change | |
| 340. |
Slip systems having two types one is glide & another one is |
| A. | climb |
| B. | slip |
| C. | twinns |
| D. | none of the above |
| Answer» A. climb | |
| 341. |
Square brackets are used to represent crystallographic |
| A. | point location |
| B. | direction |
| C. | plane |
| D. | none of the above |
| Answer» B. direction | |
| 342. |
Stacking fault energies are in the range of |
| A. | 0.01-0.1 j/m2 |
| B. | 0.01-0.1 j/cm2 |
| C. | 0.1-10 j/m2 |
| D. | 0.1-10 j/m2 |
| Answer» A. 0.01-0.1 j/m2 | |
| 343. |
Stacking fault is type of defect |
| A. | point |
| B. | line |
| C. | volume |
| D. | surface |
| Answer» D. surface | |
| 344. |
Surface decarburisation in steels in cold working . |
| A. | does not occurs |
| B. | occurs |
| C. | 0 |
| D. | 0 |
| Answer» A. does not occurs | |
| 345. |
Surface decarburisation in steels in hot working . |
| A. | does not occurs |
| B. | occurs |
| C. | 0 |
| D. | 0 |
| Answer» B. occurs | |
| 346. |
Surface finish is good in |
| A. | hot working |
| B. | cold working |
| C. | both a and b |
| D. | can’t say |
| Answer» B. cold working | |
| 347. |
Surface finish is poor in |
| A. | hot working |
| B. | cold working |
| C. | both a and b |
| D. | can’t say |
| Answer» A. hot working | |
| 348. |
Temp. required for cold working is |
| A. | above 100°c |
| B. | below 100°c |
| C. | below recrystalliza tion |
| D. | above recrystalliza tion |
| Answer» C. below recrystalliza tion | |
| 349. |
Temp. required for hot working is |
| A. | above 100°c |
| B. | below 100°c |
| C. | below recrystalliza tion |
| D. | above recrystalliza tion |
| Answer» D. above recrystalliza tion | |
| 350. |
The arrangement of multiple unit cells together is called |
| A. | crystal structure |
| B. | unit cell |
| C. | lattice constant |
| D. | lattice angle |
| Answer» A. crystal structure | |
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