MCQOPTIONS
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MCQOPTIONS
This section includes 1232 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
crystal structure is arrangement of in differeny patterns |
| A. | electrons |
| B. | protons |
| C. | atoms |
| D. | crystals |
| Answer» D. crystals | |
| 2. |
H2O + (1/2) O2 + 2e-1 --> 2OH-(Reduction) is reaction taking plcae at --- |
| A. | cathode |
| B. | anode |
| C. | both a and b |
| D. | none of the above |
| Answer» B. anode | |
| 3. |
is the tangent to the angular distortion |
| A. | true strain |
| B. | engineering strain |
| C. | shear strain |
| D. | none of the above |
| Answer» D. none of the above | |
| 4. |
is the point at which nominal surface stress occurs |
| A. | modulus of rigidity |
| B. | modulus of rupture |
| C. | modulus of elasticity |
| D. | modulus of toughness |
| Answer» C. modulus of elasticity | |
| 5. |
in simple cubic crystal structure there are number of face atom |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | none of the above |
| Answer» E. | |
| 6. |
in simple cubic crystal structure there are number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» D. 0 | |
| 7. |
in simple cubic crystal structure there are number of center atom |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» E. | |
| 8. |
in a face centred crystal structure there is number of centred atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» E. | |
| 9. |
in body centred crystal structure, there is number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» D. 0 | |
| 10. |
in body centred crystal structure, there is number of face atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» E. | |
| 11. |
in body centred crystal structure, there is number of center atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | 0 |
| Answer» B. 4 | |
| 12. |
in modification of corrosion environment, technique resuces the moisture content of air in such a way that moisture should not condense on the metal surface causing corrosion |
| A. | deaeration |
| B. | deactivation |
| C. | dehumidifica tion |
| D. | all of the above |
| Answer» D. all of the above | |
| 13. |
in tensile test, during strain hardening material after cold working shows in strength with decreased toughness |
| A. | decrease |
| B. | increase |
| C. | no change |
| D. | none of the above |
| Answer» C. no change | |
| 14. |
due to difference in electrode potential at grain and grain boundaries the type of corrosion which take place is known as - |
| A. | stress corrosion cracking |
| B. | crevice corrosion |
| C. | intergranular corrosion |
| D. | erosion corrosion |
| Answer» D. erosion corrosion | |
| 15. |
The shear stress required to produce slip on a single crystal plane is called the shear stress |
| A. | pure |
| B. | mixed |
| C. | critical |
| D. | critical resolved |
| Answer» E. | |
| 16. |
is a twisting action which results in shear stresses and strains |
| A. | bending |
| B. | torsion |
| C. | tension |
| D. | compression |
| Answer» C. tension | |
| 17. |
Time of travel of waves from the defect is for Pulse Echo method |
| A. | more |
| B. | less |
| C. | 1/4 of the total time |
| D. | 1/3 of the toal time |
| Answer» C. 1/4 of the total time | |
| 18. |
the plastic deformation takes place due to and |
| A. | slip |
| B. | twin |
| C. | both of the above |
| D. | none of the above |
| Answer» D. none of the above | |
| 19. |
compression test is carried on machine |
| A. | universal testing |
| B. | impact testing |
| C. | fatigue testing |
| D. | torsion testing |
| Answer» B. impact testing | |
| 20. |
charpy and izod tests are consucted on machine |
| A. | rockwell hardness testing |
| B. | brinell hardness testing |
| C. | creep testing |
| D. | impact testing |
| Answer» E. | |
| 21. |
A tensile test specimen has cross section |
| A. | square |
| B. | rectangular |
| C. | circular |
| D. | all of the above |
| Answer» E. | |
| 22. |
a compression test specimen has cross section |
| A. | square |
| B. | rectangular |
| C. | circular |
| D. | all of the above |
| Answer» E. | |
| 23. |
if total amount of energy absorbed by a steel specimen is 5 N-m for a volume of 10 x 10-3 mm3, the modulus of toughness is N/mm2 |
| A. | 5 x 10-4 |
| B. | 0.5 |
| C. | 2 x 103 |
| D. | 2 |
| Answer» C. 2 x 103 | |
| 24. |
mechannnial properties of the metal after plastic deformation |
| A. | increases |
| B. | either increase or decrease |
| C. | remains constant |
| D. | none of the above |
| Answer» C. remains constant | |
| 25. |
in charpy test, the size of specimen is mm |
| A. | 10x10x75 |
| B. | 10x10x35 |
| C. | 10x10x55 |
| D. | 10x10x45 |
| Answer» D. 10x10x45 | |
| 26. |
in charpy test, specimen with notch is used |
| A. | key hole |
| B. | u |
| C. | v |
| D. | all of the above |
| Answer» E. | |
| 27. |
compression test gives best results for material |
| A. | cast iron |
| B. | comcrete block |
| C. | ceramic products |
| D. | all of the above |
| Answer» E. | |
| 28. |
Cu diffuses in FCC Ni, this is type of impurity |
| A. | substitution al |
| B. | interstitial |
| C. | both a & b |
| D. | none of the above |
| Answer» B. interstitial | |
| 29. |
Carbon diffuses in Fe, this is type of impurity |
| A. | substitution al |
| B. | interstitial |
| C. | both a & b |
| D. | none of the above |
| Answer» C. both a & b | |
| 30. |
Forces required in cold working is than hot working |
| A. | greater |
| B. | less |
| C. | equal |
| D. | can t say |
| Answer» B. less | |
| 31. |
in impact test, surface fractures are observed |
| A. | shiny and dull |
| B. | bright and shiny |
| C. | dull gray and fibrous |
| D. | all of the above |
| Answer» E. | |
| 32. |
Hot working process is carried out on .. Recrystallisation temp. |
| A. | equal |
| B. | above |
| C. | below |
| D. | none of the above |
| Answer» C. below | |
| 33. |
Recrystallisation temperature of Iron is .. |
| A. | 727 c |
| B. | 775 c |
| C. | 800 c |
| D. | 700 c |
| Answer» B. 775 c | |
| 34. |
are not used under tensile type loading |
| A. | ductile material |
| B. | brittle material |
| C. | any one of above |
| D. | none of the above |
| Answer» C. any one of above | |
| 35. |
shows good behavious under tensile type of loading |
| A. | ductile material |
| B. | brittle material |
| C. | any one of above |
| D. | none of the above |
| Answer» B. brittle material | |
| 36. |
in dissolved oxygen content of electrolyte has effect on corrosion reaction |
| A. | it forces the cathodic reaction to the right i.e. producing more oh- ions |
| B. | it removes more electrons and therefore accelarate the corrosion at the anode |
| C. | both are true sentenses |
| D. | none of the above is right |
| Answer» D. none of the above is right | |
| 37. |
wet corroison occurs under conditions |
| A. | when conducting liquid is in contact with metal |
| B. | when two dissimilar metals are immersed in aqueous |
| C. | single metals is dipped partially in aqueous solution of |
| D. | all of the above |
| Answer» E. | |
| 38. |
Detection of subsurfae depends on , in MPT |
| A. | the strength of magnetic field |
| B. | the strength of ac magnetic field |
| C. | both a & b |
| D. | none of the above |
| Answer» B. the strength of ac magnetic field | |
| 39. |
is the minimum value of stress in plastic region |
| A. | uts |
| B. | proof stress |
| C. | yield stress |
| D. | breaking stress |
| Answer» E. | |
| 40. |
is the maximum value of stress in the plastic region |
| A. | uts |
| B. | proof stress |
| C. | yield stress |
| D. | proportional stress |
| Answer» B. proof stress | |
| 41. |
during design and fabrication of component, type of joints should be used |
| A. | welded |
| B. | bolted |
| C. | riveted |
| D. | all of the above |
| Answer» B. bolted | |
| 42. |
Miller indices of the line of intersection of ( 1 11) and (110) are |
| A. | [110] |
| B. | [101] |
| C. | [10-1] |
| D. | [-110] |
| Answer» E. | |
| 43. |
for materials having high ductility, type of bend test is used |
| A. | close |
| B. | angle |
| C. | 1800 |
| D. | cold |
| Answer» D. cold | |
| 44. |
atoms are bonded with each other through bond |
| A. | covalent |
| B. | ionic |
| C. | both a and b |
| D. | a or b |
| Answer» E. | |
| 45. |
during design and fabriaction of the component, a good design should have properties |
| A. | no crevices between adjacent areas |
| B. | free drainage and easy washings |
| C. | no chance for differential aeration corrosion |
| D. | all of the above |
| Answer» E. | |
| 46. |
during the product design and its manufacturing process, material undergoes test |
| A. | non- destructive testing |
| B. | destructive testing |
| C. | process inspection |
| D. | all of the above |
| Answer» E. | |
| 47. |
the critical level of stress depends uopn factor |
| A. | composition of alloy |
| B. | type of environmnet |
| C. | service temperatue |
| D. | all of the above |
| Answer» E. | |
| 48. |
In MPT, skin effect comes into picture due to current |
| A. | ac |
| B. | dc |
| C. | both a & b |
| D. | none of the above |
| Answer» B. dc | |
| 49. |
In MPT, when the part is magnetised , transverse cracks are easily detected |
| A. | lengthwise |
| B. | circular |
| C. | parallel to crack |
| D. | none of the above |
| Answer» B. circular | |
| 50. |
in izod imapct test, the size of specimen is mm |
| A. | 10x10x75 |
| B. | 10x10x35 |
| C. | 10x10x55 |
| D. | 10x10x45 |
| Answer» B. 10x10x35 | |