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.
| 151. |
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 theabove |
| Answer» C. no change | |
| 152. |
is the limitation of sacrificial anodic protection |
| A. | poorly coated structures may require many anodes |
| B. | it can be ineffective in high resistivity environment |
| C. | installation can be expensive if installed after construction |
| D. | all of the above |
| Answer» E. | |
| 153. |
a commonly used ratio for compression testis |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 1 |
| Answer» C. 4 | |
| 154. |
the length of arm of pendulum in charpy testis |
| A. | 0.825 m |
| B. | 0.758 m |
| C. | 0.953 m |
| D. | 0.625 m |
| Answer» B. 0.758 m | |
| 155. |
is ha davantage of anodic protection to prevent corrosion |
| A. | anodic protection has greaterthrowing |
| B. | method can be applied to severlycorrosiong |
| C. | it requires low current density,hence its |
| D. | all of the above |
| Answer» E. | |
| 156. |
for measuring the elongation of specimen onUTM during tensile test is used |
| A. | durometer |
| B. | elastometer |
| C. | vernier |
| D. | extensometer |
| Answer» E. | |
| 157. |
current magnetization makes it possible to detect surface as well as subsurface discontinuities. |
| A. | ac |
| B. | dc |
| C. | both a & b |
| D. | none of theabove |
| Answer» C. both a & b | |
| 158. |
get for burger vector |
| A. | quality |
| B. | plane |
| C. | direction |
| D. | atoms |
| Answer» D. atoms | |
| 159. |
Level of liquid in the sealed container may bechecked by |
| A. | magnaflux |
| B. | dye penetrant |
| C. | radiography |
| D. | eddy current |
| Answer» D. eddy current | |
| 160. |
in a face centred crystal structure there is number of centred atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| Answer» E. | |
| 161. |
compression test gives best results for material |
| A. | cast iron |
| B. | comcrete block |
| C. | ceramic products |
| D. | all of the above |
| Answer» E. | |
| 162. |
during tensile test, if gauge length percentage elongation increases due to localised elongation |
| A. | decreases |
| B. | increases |
| C. | same |
| D. | all of the above |
| Answer» B. increases | |
| 163. |
resistance of a material for its deformation iscalled as |
| A. | hardness |
| B. | toughness |
| C. | stiffness |
| D. | all of the above |
| Answer» D. all of the above | |
| 164. |
is the application of impressed current method of cathodic protection |
| A. | open water box coolers |
| B. | condensers |
| C. | laid up ships |
| D. | all of the above |
| Answer» E. | |
| 165. |
CRSS is calculated by using law |
| A. | bragg\s |
| B. | schimd\s |
| C. | bauchinger |
| D. | fleming\s |
| Answer» C. bauchinger | |
| 166. |
inhibitors prevent evolution of hydrogen (in case of acidic solution) and oxygen absorption (in case of neutral solution) to prevent corrosion |
| A. | cathodic |
| B. | anodic |
| C. | both a and b |
| D. | none of the above |
| Answer» B. anodic | |
| 167. |
stress acts parallel to the plane |
| A. | bending |
| B. | tensile |
| C. | compressive |
| D. | shear |
| Answer» E. | |
| 168. |
Atom movements in twinnning are muchthan atomic spacing |
| A. | more |
| B. | less |
| C. | equal |
| D. | none of the above |
| Answer» C. equal | |
| 169. |
an aluminium specimen is subjected to a stress of 160 /mm2 and corressponding modulus of resilience is 0.128 Mpa.Youngs modulus for aluminium is |
| A. | 200 gpa |
| B. | 125 gpa |
| C. | 150 gpa |
| D. | 100 gpa |
| Answer» E. | |
| 170. |
In a screw dislocation Burger's vectore is -------- to the linear defect but there is distoration of the plane. |
| A. | parallel |
| B. | point |
| C. | edges |
| D. | none of the above |
| Answer» B. point | |
| 171. |
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» B. average number of atoms per unit cell | |
| 172. |
shows good behavious undertensile type of loading |
| A. | ductile material |
| B. | brittle material |
| C. | any one ofabove |
| D. | none of theabove |
| Answer» B. brittle material | |
| 173. |
total area under stress-strain curve is calledas |
| A. | toughness |
| B. | resilience |
| C. | malleability |
| D. | ductility |
| Answer» B. resilience | |
| 174. |
method of corrosive prevention is useful only in closed areas like air conditioned shops, laboratories, computer rooms etc. |
| A. | deactivation |
| B. | dehumidifica tion |
| C. | alkaline neutralizatio n |
| D. | dearation |
| Answer» C. alkaline neutralizatio n | |
| 175. |
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» C. more than 45° | |
| 176. |
In metals the plastic deformation generally takes place by the process of --------. |
| A. | twinning |
| B. | slipping |
| C. | vacancy |
| D. | none of the above |
| Answer» C. vacancy | |
| 177. |
Cold working process is carried out on……….. Recrystallisation temp. |
| A. | equal |
| B. | above |
| C. | below |
| D. | none of the above |
| Answer» D. none of the above | |
| 178. |
slip occurs along plane and indirection |
| A. | random, specific |
| B. | specific, random |
| C. | random, random |
| D. | specific, specific |
| Answer» E. | |
| 179. |
a unit cell represents of a crystal strtucture |
| A. | weight |
| B. | size |
| C. | geometry |
| D. | none of the above |
| Answer» D. none of the above | |
| 180. |
screw dislocations have burger vectorfor dislocation line |
| A. | perpendicul ar |
| B. | parallel |
| C. | inclined |
| D. | first perpendicul ar then parallel |
| Answer» B. parallel | |
| 181. |
tensile test gives values of material properties under the action of forces |
| A. | compressive |
| B. | tensile |
| C. | shear |
| D. | bending |
| Answer» C. shear | |
| 182. |
If the care is not taken during magnaflux testthen. .... is possible |
| A. | local heating and sparking |
| B. | explosion |
| C. | harmful uvradiation |
| D. | none |
| Answer» B. explosion | |
| 183. |
α - Fe has crystal structure |
| A. | simple cubic |
| B. | body centred |
| C. | face centred |
| D. | hexagonal close packed |
| Answer» C. face centred | |
| 184. |
Which of the following method uses twotransducers? |
| A. | pulse echo |
| B. | through transmission |
| C. | eddy currenttest |
| D. | magnetic particle test |
| Answer» C. eddy currenttest | |
| 185. |
Hot working process is carried out on……….. Recrystallisation temp. |
| A. | equal |
| B. | above |
| C. | below |
| D. | none of the above |
| Answer» C. below | |
| 186. |
in electrochemical corrosion, at anode which type of chemical reaction takingplace |
| A. | oxidation reaction |
| B. | reduction reaction |
| C. | metallic reation |
| D. | none of the above |
| Answer» B. reduction reaction | |
| 187. |
Which one is not a part of magnafluxprocess? |
| A. | surface preparation |
| B. | magnetization |
| C. | demagnetization |
| D. | observation under microscope |
| Answer» E. | |
| 188. |
The circular cracks are detected in magnafluxtest by |
| A. | circular magnetizatio n |
| B. | longitudinal magnetizatio n |
| C. | demagnetization |
| D. | all of theabove |
| Answer» C. demagnetization | |
| 189. |
HCP structure have ligancy ….. |
| A. | 6 |
| B. | 8 |
| C. | 10 |
| D. | 12 |
| Answer» E. | |
| 190. |
FCC materials are good in …. |
| A. | brittle |
| B. | malleable |
| C. | ductile |
| D. | hard |
| Answer» D. hard | |
| 191. |
To find out the transverse crack, magnetic field has to apply, in MPT |
| A. | lengthwise |
| B. | circular |
| C. | parallel tocrack |
| D. | none of theabove |
| Answer» C. parallel tocrack | |
| 192. |
is the point at which nominalsurface stress occurs |
| A. | modulus of rigidity |
| B. | modulus of rupture |
| C. | modulus of elasticity |
| D. | modulus of toughness |
| Answer» C. modulus of elasticity | |
| 193. |
Which factor of ultrasonic waves is measuredin Ultrasonic Testing? |
| A. | wavelength |
| B. | speed of waves |
| C. | time of travel |
| D. | distance traveled |
| Answer» D. distance traveled | |
| 194. |
The stress required to produce same deformation is higher in case of......... polycrystalline material as compared to..... ...polycrystalline materials. |
| A. | coarse grained,fin e grained |
| B. | fine grained,co ar se grained |
| C. | both a and b |
| D. | none |
| Answer» C. both a and b | |
| 195. |
in impact test, surface fractures areobserved |
| A. | shiny anddull |
| B. | bright andshiny |
| C. | dull gray andfibrous |
| D. | all of the above |
| Answer» E. | |
| 196. |
Slip systems having two types one is glide& another one is |
| A. | climb |
| B. | slip |
| C. | twinns |
| D. | none of the above |
| Answer» B. slip | |
| 197. |
Chances of crack propagation is more in -------. |
| A. | cold working |
| B. | hot working |
| C. | annealing |
| D. | none of the above |
| Answer» B. hot working | |
| 198. |
is constant at the yield point |
| A. | strain |
| B. | stress |
| C. | temperature |
| D. | all of the above |
| Answer» C. temperature | |
| 199. |
Internal defects inthe steel componentcannot be detected by |
| A. | magnaflux |
| B. | radiography |
| C. | ultrasonic |
| D. | none |
| Answer» B. radiography | |
| 200. |
in modification of corrosive environment, during technique, certain chemicals are added which combine rapildywith oxygen in acquous solution and reduce |
| A. | deaeration |
| B. | deactivation |
| C. | dehumidifica tion |
| D. | all of the above |
| Answer» C. dehumidifica tion | |