MCQOPTIONS
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MCQOPTIONS
This section includes 166 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. |
The metallic tubes have which kind of structure? |
| A. | armchair |
| B. | chiral |
| C. | boat |
| D. | achiral |
| Answer» B. chiral | |
| 102. |
CNTs are capped on both ends with which carbon nanostructure? |
| A. | graphite |
| B. | diamond |
| C. | c60 |
| D. | benzene |
| Answer» D. benzene | |
| 103. |
CNTs stands for |
| A. | carbon nanotubes |
| B. | carbon nanotechnology |
| C. | carbon nanoscience and technology |
| D. | carbon nine technology |
| Answer» B. carbon nanotechnology | |
| 104. |
C60 is soluble in |
| A. | water |
| B. | ammonia |
| C. | hcl |
| D. | benzene |
| Answer» E. | |
| 105. |
The configuration of Buckminsterfullerene is |
| A. | 12 hexagons and 22 pentagons |
| B. | 18 hexagons and 15 pentagon |
| C. | 20 hexagon and 12 pentagon |
| D. | 15 hexagon and 15 pentagon |
| Answer» D. 15 hexagon and 15 pentagon | |
| 106. |
The efficiency of today’s best solar cell is about |
| A. | 15-20% |
| B. | 40% |
| C. | 50% |
| D. | 75% |
| Answer» C. 50% | |
| 107. |
What are the advantages of nano-composite packages? |
| A. | lighter and biodegradable |
| B. | enhanced thermal stability, conductivity and mechanical strength |
| C. | gas barrier properties |
| D. | all of the mentioned |
| Answer» E. | |
| 108. |
Which of the following is an example of top- down approach for the preparation of nanomaterials? |
| A. | gas phase agglomeration |
| B. | molecular self-assembly |
| C. | mechanical grinding |
| D. | molecular beam epitaxy |
| Answer» D. molecular beam epitaxy | |
| 109. |
What is the advantage of using Surface Mount Technology? |
| A. | all of the mentioned |
| B. | low power consumption |
| C. | reduces heat dissipation in components |
| D. | use leaded or leadless components |
| Answer» E. | |
| 110. |
Which of the following process is involve in thick film technology |
| A. | screen printing |
| B. | ceramic firing |
| C. | silk screening |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 111. |
An ancient process used till today for production of circuit films is, |
| A. | silk screening technique |
| B. | surface mount technology |
| C. | ceramic printing technique |
| D. | screen printing technique |
| Answer» E. | |
| 112. |
Modified Chemical Vapor Deposition (MCVD) process is also called as an inside vapor phase oxidation (IVPD) technique. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 113. |
In modified chemical vapor deposition, vapor phase reactant such as pass through a hot zone. |
| A. | halide and oxygen |
| B. | halide and hydrogen |
| C. | halide and silica |
| D. | hydroxides and oxygen |
| Answer» B. halide and hydrogen | |
| 114. |
Only graded index fibers are made with the help of vapor-phase deposition techniques. |
| A. | true |
| B. | false |
| Answer» C. | |
| 115. |
is the stimulation of oxide formation by means of non-isothermal plasma maintained at low pressure in a microwave cavity surrounding the tube. |
| A. | outside vapor phase oxidation (ovpo) |
| B. | vapor axial deposition (vad) |
| C. | modified chemical vapor deposition (mcvd) |
| D. | plasma-activated chemical vapor deposition (pcvd) |
| Answer» E. | |
| 116. |
uses flame hydrolysis stems from work on soot processes which were used to prepare the fiber with losses below 20 dB/km. |
| A. | outside vapor phase oxidation |
| B. | chemical vapor deposition |
| C. | liquid phase melting |
| D. | crystallization |
| Answer» B. chemical vapor deposition | |
| 117. |
technique is method of preparing extremely pure optical glasses. |
| A. | liquid phase (melting) |
| B. | radio frequency induction |
| C. | optical attenuation |
| D. | vapor phase deposition (vpd) |
| Answer» E. | |
| 118. |
P2O5 is used as a |
| A. | dopant |
| B. | starting material |
| C. | cladding glass |
| D. | core glass |
| Answer» B. starting material | |
| 119. |
What is called a dispersion medium? |
| A. | it is where the dispersed phase settles |
| B. | it is where the solute particles settle |
| C. | it is where the dispersed phase is suspended |
| D. | it is the primary medium |
| Answer» D. it is the primary medium | |
| 120. |
What is called a dispersion phase? |
| A. | it is the main layer |
| B. | it is the secondary layer in which the colloidal particles are dispersed |
| C. | it is the secondary layer |
| D. | it is the basic colloidal layer |
| Answer» C. it is the secondary layer | |
| 121. |
What is the size of normal an amino acid? |
| A. | 1 to 2 nm |
| B. | 2 to 3 nm |
| C. | 4 to 5 nm |
| D. | 2 to 5 nm |
| Answer» B. 2 to 3 nm | |
| 122. |
Which of the following form of colloid is considered to be the lightest colloid? |
| A. | gaseous foam |
| B. | solid sol |
| C. | sol |
| D. | liquid sol |
| Answer» B. solid sol | |
| 123. |
Which of the following form of colloid is considered to be the strongest colloid? |
| A. | gel |
| B. | foam |
| C. | solid sol |
| D. | liquid sol |
| Answer» D. liquid sol | |
| 124. |
During an experiment, accidently iodine got mixed up with a biological sample of proteins and polys. Identify the smallest colloid that can be obtained during the process of separation. |
| A. | fats |
| B. | amino acids |
| C. | polys |
| D. | r molecules |
| Answer» C. polys | |
| 125. |
Where does colloidal solution find application in? |
| A. | in milk industries |
| B. | in chromatic chemical industries |
| C. | in crystallography |
| D. | in textiles |
| Answer» B. in chromatic chemical industries | |
| 126. |
Which of the following is a characteristic of a colloid? |
| A. | it forms 2 layers with a solution |
| B. | it forms turbid layers |
| C. | it forms heterogeneous layer |
| D. | it forms a homogeneous layer |
| Answer» C. it forms heterogeneous layer | |
| 127. |
3 COLLOIDAL ROUTES, SELF-ASSEMBLY |
| A. | 10-20 nm |
| B. | more than 20 nm |
| C. | less than 10 nm |
| D. | 30 to 50 nm |
| Answer» B. more than 20 nm | |
| 128. |
Which of the following elements of USM is used to apply working force during machining operation? |
| A. | tool |
| B. | feeding unit |
| C. | transducer |
| D. | none of the mentioned |
| Answer» C. transducer | |
| 129. |
Element of machine which is used to convert high frequency electrical impulse into mechanical vibration in USM is known as |
| A. | tool |
| B. | feeding unit |
| C. | transducer |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 130. |
Which gas serves as buffer gas in Laser ablation? |
| A. | nitrogen |
| B. | oxygen |
| C. | helium |
| D. | neon |
| Answer» D. neon | |
| 131. |
Particles of ZrO2, Y2O2 and Nano whiskers have been produced by |
| A. | sol-gel |
| B. | cvc |
| C. | plasma spraying |
| D. | laser pyrolysis |
| Answer» C. plasma spraying | |
| 132. |
The following is a bottom-up process. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 133. |
Typical precursor used in sol-gel are |
| A. | metal oxides |
| B. | metal dioxides |
| C. | metal alkoxides |
| D. | metal fluorides |
| Answer» D. metal fluorides | |
| 134. |
Chemical solution deposition is also known as |
| A. | sol-gel |
| B. | cvd |
| C. | plasma spraying |
| D. | laser pyrolysis |
| Answer» B. cvd | |
| 135. |
Photolithography is a type of patterning technique. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 136. |
CVD stands for |
| A. | carbon vapour density |
| B. | chemical vapour density |
| C. | chemical vapour deposition |
| D. | carbon vapour deposition |
| Answer» D. carbon vapour deposition | |
| 137. |
The following flow chart is for which method? |
| A. | milling |
| B. | attrition |
| C. | pattering |
| D. | microfabrication |
| Answer» E. | |
| 138. |
What kind of metals are used for milling operations? |
| A. | soft and brittle |
| B. | soft and elastic |
| C. | hard and brittle |
| D. | hard and elastic |
| Answer» D. hard and elastic | |
| 139. |
Which of the following is an example of Bottom Up approach? |
| A. | attrition |
| B. | colloidal dispersion |
| C. | milling |
| D. | etching |
| Answer» C. milling | |
| 140. |
For milling operations, what kind of environment is preferred? |
| A. | acidic |
| B. | basic |
| C. | active |
| D. | inert |
| Answer» E. | |
| 141. |
What’s the procedure in Top-down fabrication method? |
| A. | nano-particles -> powder -> bulk |
| B. | powder -> bulk – > nano-particles |
| C. | bulk -> powder – > nano-particles |
| D. | nano-particle – > bulk -> powder |
| Answer» D. nano-particle – > bulk -> powder | |
| 142. |
The temperature at which plastics begin to become softer and defer under a load is known as |
| A. | softening point |
| B. | melting point |
| C. | eutectic point |
| D. | heat distortion point |
| Answer» E. | |
| 143. |
What effect do thermal variations in volume have on a body? |
| A. | expansion |
| B. | contraction |
| C. | cracking |
| D. | phase transformation |
| Answer» D. phase transformation | |
| 144. |
Which term is used to define the temperature at which a substance changes its status from solid to liquid? |
| A. | boiling point |
| B. | melting point |
| C. | condensation point |
| D. | freezing point |
| Answer» C. condensation point | |
| 145. |
The melting point of Iron (Fe) is |
| A. | 660oc |
| B. | 1084oc |
| C. | 419oc |
| D. | 1538oc |
| Answer» E. | |
| 146. |
What effect does the addition of thermal energy have on a material? |
| A. | thermal contraction |
| B. | thermal expansion |
| C. | no change |
| D. | reproduction |
| Answer» C. no change | |
| 147. |
The response of a material due to the function of heat is known as |
| A. | mechanical property |
| B. | electrical property |
| C. | chemical property |
| D. | thermal property |
| Answer» E. | |
| 148. |
Vesicle is a type of |
| A. | nanostructure |
| B. | nanoparticle |
| C. | nanocrystal |
| D. | supramolecular system |
| Answer» E. | |
| 149. |
Specific heat of materials is expressed in terms of |
| A. | w/m k |
| B. | j/k |
| C. | j/kg k |
| D. | m3/kg |
| Answer» D. m3/kg | |
| 150. |
Quantum dots can be used in |
| A. | crystallography |
| B. | optoelectronics |
| C. | mechanics |
| D. | quantum physics |
| Answer» C. mechanics | |