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.
| 101. |
Recrystallization temperature of aluminium is 150˚ C and that of copper is: |
| A. | 100˚ |
| B. | 200˚ |
| C. | 300˚ |
| D. | 400˚ |
| Answer» C. 300˚ | |
| 102. |
are used as cathodic inhibitors to prevent corrosion of metals |
| A. | chromates |
| B. | nitrates |
| C. | antimony and arsenic oxides |
| D. | phosphates |
| Answer» D. phosphates | |
| 103. |
slip plane orientation after grain boundary |
| A. | by pass |
| B. | crosses |
| C. | change |
| D. | none of the above |
| Answer» D. none of the above | |
| 104. |
the type of corrosion which takes place due to electrochemical reaction is known as |
| A. | dry corrosion |
| B. | wet corroison |
| C. | none of the above |
| D. | all of the above |
| Answer» C. none of the above | |
| 105. |
Which of the following method uses theprinciple of SONAR |
| A. | eddy currenttest |
| B. | ultrasonic testing |
| C. | x- ray detection |
| D. | ?- ray detection |
| Answer» C. x- ray detection | |
| 106. |
whioch of the following is not line defect? |
| A. | dislocation |
| B. | low angle grain boundary |
| C. | schottky |
| D. | both b and c |
| Answer» E. | |
| 107. |
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. | |
| 108. |
in tensile stress, necking occurs at a pointwhere |
| A. | (dσt/det) =et |
| B. | (det/dσt) =σt |
| C. | (det/dσt) =et |
| D. | (dσt/det) =σt |
| Answer» E. | |
| 109. |
Cleavage fracture is the main characteristicsof |
| A. | ductile material |
| B. | brittle material |
| C. | any one ofabove |
| D. | none of theabove |
| Answer» C. any one ofabove | |
| 110. |
in body centred crystal structure, there is number of center atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| Answer» B. 4 | |
| 111. |
Which of the following is true for Magneticparticle inspection |
| A. | material must be ferromagneti c |
| B. | plastics can be tested |
| C. | applicabl e for all materials |
| D. | none of theabove |
| Answer» B. plastics can be tested | |
| 112. |
one of the following is velocity related attack, due to fluid flow |
| A. | cavitation corrosion |
| B. | uniform corrosion |
| C. | bimetal corrosion |
| D. | intergranular corrosion |
| Answer» B. uniform corrosion | |
| 113. |
imperfections involve missing of cation & anion from it's respective position |
| A. | frankel |
| B. | schottky |
| C. | point |
| D. | interstitial |
| Answer» B. schottky | |
| 114. |
Cu diffuses in FCC Ni, this is type ofimpurity |
| A. | substitution al |
| B. | interstitial |
| C. | both a & b |
| D. | none of the above |
| Answer» B. interstitial | |
| 115. |
requires more stress to be initiated with respect to |
| A. | slip, twinning |
| B. | twinning, slip |
| C. | grain boundary defect, slip |
| D. | none of the above |
| Answer» C. grain boundary defect, slip | |
| 116. |
is the method to apply metallic coating to prevent corrosion |
| A. | hot dipping |
| B. | metal spraying |
| C. | electrplating |
| D. | all of the above |
| Answer» E. | |
| 117. |
hourglass fracture is observed in test |
| A. | compression |
| B. | tensile |
| C. | impact |
| D. | bend |
| Answer» B. tensile | |
| 118. |
Surface Defects in ceramics can be detectedby MPT |
| A. | true |
| B. | false |
| Answer» C. | |
| 119. |
Principle of operation of eddy current test isbased on the |
| A. | developmentof emf |
| B. | types of current supplied to the material |
| C. | piezoelectricity |
| D. | ferroelectricity |
| Answer» B. types of current supplied to the material | |
| 120. |
charpy and izod tests are consucted on machine |
| A. | rockwell hardness testing |
| B. | brinell hardness testing |
| C. | creep testing |
| D. | impact testing |
| Answer» E. | |
| 121. |
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 theabove |
| Answer» B. the strength of ac magnetic field | |
| 122. |
in a face centred crystal structure there is number of corner atoms |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| Answer» D. | |
| 123. |
A crystal structure in a regular array of atoms is arranged in one of the space lattices |
| A. | 10 |
| B. | 12 |
| C. | 14 |
| D. | none of the above |
| Answer» D. none of the above | |
| 124. |
select odd options :- Magnetic partical test isnot suitable for |
| A. | gray cast iron |
| B. | chilled castiron |
| C. | aluminium |
| D. | steel |
| Answer» D. steel | |
| 125. |
If the deformation is carried at 0°C, it is |
| A. | cold working |
| B. | hot working |
| C. | both a and b |
| D. | can’t say |
| Answer» E. | |
| 126. |
If the deformation is carried at 100°C, it is |
| A. | cold working |
| B. | hot working |
| C. | both a and b |
| D. | can’t say |
| Answer» E. | |
| 127. |
In magnaglo, the wavelength of ultravioletlight is |
| A. | 2500 to 3000a° |
| B. | 3500 to 4000a° |
| C. | 4500 to 5000a° |
| D. | none of theabove |
| Answer» C. 4500 to 5000a° | |
| 128. |
Edge dislocations are the dimensional regions in a crystal |
| A. | 3 |
| B. | 2 |
| C. | 4 |
| D. | 1 |
| Answer» E. | |
| 129. |
Fe + 2H+ = Fe+2 + H2 ischemical reaction in |
| A. | hydrogen evolution |
| B. | oxyfen absorption |
| C. | both a and b |
| D. | none of the above |
| Answer» B. oxyfen absorption | |
| 130. |
in simple cubic crystal structure there arenumber of face atom |
| A. | 1 |
| B. | 4 |
| C. | 8 |
| D. | none of the above |
| Answer» E. | |
| 131. |
Select odd options :- Couplant is used inUltrasonic Testing to |
| A. | remove airgap |
| B. | clean the surface |
| C. | for better contact |
| D. | for lubrication purpose |
| Answer» C. for better contact | |
| 132. |
is the advantage of impressed current method of cathodic protection |
| A. | it can be designed for a wide range of voltage and current |
| B. | it can be applied in high resistivity environment |
| C. | effective in protecting uncaoted and poorly coated structures |
| D. | all of the above |
| Answer» E. | |
| 133. |
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 | |
| 134. |
The lattice above the dislocation line is in in positive edge dislocations |
| A. | tension |
| B. | shear |
| C. | compression |
| D. | all |
| Answer» D. all | |
| 135. |
in use of speacial alloys, alloying of with iron increase corrosion resitance |
| A. | cr |
| B. | ni |
| C. | both a and b |
| D. | tin |
| Answer» D. tin | |
| 136. |
cold working requires higherthan hot working |
| A. | temperature |
| B. | time |
| C. | energy for plastic deformation |
| D. | none of the above |
| Answer» D. none of the above | |
| 137. |
working increases ultimate tensile strength. |
| A. | hot |
| B. | cold |
| C. | rolled |
| D. | none of the above |
| Answer» C. rolled | |
| 138. |
during the product design and its manufacturing process, material undergoes test |
| A. | non- destructive testing |
| B. | destructivetesting |
| C. | process inspection |
| D. | all of the above |
| Answer» E. | |
| 139. |
Burger vector to dislocation line isfor edge dislocations |
| A. | perpendicul ar |
| B. | parallel |
| C. | inclined |
| D. | first perpendicul ar then parallel |
| Answer» C. inclined | |
| 140. |
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» B. below | |
| 141. |
in beam cross-sections,the axis along which the bending stresses are zero, is called as axis |
| A. | bending |
| B. | parallel |
| C. | perpendicular |
| D. | neutral |
| Answer» E. | |
| 142. |
(a√2)/4 is the radius of |
| A. | sc |
| B. | bcc |
| C. | fcc |
| D. | hcp |
| Answer» D. hcp | |
| 143. |
In a simple cubic structure, [100] and(100) parallel? |
| A. | no |
| B. | yes |
| C. | maybe yes |
| D. | none of the above |
| Answer» B. yes | |
| 144. |
imperfections involve missing of cation from it's respective position |
| A. | frankel |
| B. | schottky |
| C. | point |
| D. | interstitial |
| Answer» C. point | |
| 145. |
Recrystallisation temperature of Iron is……….. |
| A. | 727 °c |
| B. | 775 °c |
| C. | 800 °c |
| D. | 700 °c |
| Answer» B. 775 °c | |
| 146. |
A tensile test specimen has crosssection |
| A. | square |
| B. | rectangular |
| C. | circular |
| D. | all of the above |
| Answer» E. | |
| 147. |
in use of speacial alloys, alloying with increases corrosion resistance of brasses and |
| A. | cr |
| B. | ni |
| C. | both a and b |
| D. | tin |
| Answer» E. | |
| 148. |
Miller indices of the line of intersection of(⎯ 1⎯ 11) and (110) are |
| A. | [110] |
| B. | [101] |
| C. | [10-1] |
| D. | [-110] |
| Answer» E. | |
| 149. |
substance which absobe moisture on its surface is used in dehumidification technique for midifiaction of corrosive environment |
| A. | alumina |
| B. | silica gel |
| C. | both a and b |
| D. | none of the above |
| Answer» D. none of the above | |
| 150. |
are not used under compression type of loading |
| A. | ductile material |
| B. | brittle material |
| C. | any one ofabove |
| D. | none of theabove |
| Answer» B. brittle material | |