MCQOPTIONS
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MCQOPTIONS
This section includes 2114 Mcqs, each offering curated multiple-choice questions to sharpen your Unit Processes knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The Almen Strip is used in __________ |
| A. | shot peening |
| B. | rolling |
| C. | forging |
| D. | extrusion |
| Answer» B. rolling | |
| 152. |
The carburization of the surface has positive effect in improving the fatigue property of the material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 153. |
The “par bar” kind of sample used for ___________ |
| A. | tensile strength |
| B. | creep strength |
| C. | fatigue strength affected by the surface roughness |
| D. | the effect of the notch on the fatigue strength |
| Answer» D. the effect of the notch on the fatigue strength | |
| 154. |
As the surface roughness of the material increases, fatigue property of the material ___________ |
| A. | increases |
| B. | decreases |
| C. | remain the same |
| D. | no relationship |
| Answer» C. remain the same | |
| 155. |
The size of the component does play a role in deciding the fatigue life of the element. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 156. |
The value of the notch sensitivity factor lies between __________ |
| A. | 0 to 1 |
| B. | 1 to 2 |
| C. | 0 to infinity |
| D. | minus infinity to plus infinity |
| Answer» B. 1 to 2 | |
| 157. |
What type of mechanism is exhibited in the following diagram? |
| A. | Slow start |
| B. | Three way handshake mechanism |
| C. | Fast retransmission |
| D. | Selective retransmission |
| Answer» B. Three way handshake mechanism | |
| 158. |
A key depletion attack is a malicious attack on the network layer. |
| A. | True |
| B. | False |
| Answer» C. | |
| 159. |
Which layer is associated with based utility attack? |
| A. | Physical layer |
| B. | Data link layer |
| C. | Network layer |
| D. | Transport layer |
| Answer» C. Network layer | |
| 160. |
Which among the following statements is false about spectrum aware routing? |
| A. | Spectrum aware routing does not require local spectrum knowledge |
| B. | Spectrum aware routing requires cooperation sensing |
| C. | Spectrum aware routing performs poorly during link failure |
| D. | Spectrum aware routing does not generate large overhead |
| Answer» B. Spectrum aware routing requires cooperation sensing | |
| 161. |
Which among the following occurs when intermediary nodes choose identical frequency bands? |
| A. | Link failure |
| B. | Increased cost |
| C. | Increased power |
| D. | Increased delay |
| Answer» E. | |
| 162. |
Which unit is responsible for initiating local coordination? |
| A. | Primary user |
| B. | Secondary user |
| C. | Central entity |
| D. | Intermediary node |
| Answer» E. | |
| 163. |
Which among the following is true about tree based routing? |
| A. | Tree based routing is a distributed routing scheme controlled by a multiple network entities |
| B. | Tree based routing is a distributed routing scheme controlled by a single network entity |
| C. | Tree based routing is a centralized routing scheme controlled by a single network entity |
| D. | Tree based routing is a centralized routing scheme controlled by a multiple network entities |
| Answer» D. Tree based routing is a centralized routing scheme controlled by a multiple network entities | |
| 164. |
Which among the following is the first step in multipath routing? |
| A. | Selection of a spectrum band for transmission |
| B. | Identification of multi-paths |
| C. | Evaluation of route metrics |
| D. | Selection of route metrics |
| Answer» B. Identification of multi-paths | |
| 165. |
Which among the following increases with an increase in spectrum handoff latency? |
| A. | Overhead |
| B. | Time of arrival |
| C. | Round trip time |
| D. | Link layer delay |
| Answer» D. Link layer delay | |
| 166. |
What is spectrum handoff latency? |
| A. | Spectrum handoff latency is the time taken to switch to a new frequency during handoff |
| B. | Spectrum handoff latency is the period over which an xG user can use licensed band before handoff |
| C. | Spectrum handoff latency is the time taken to estimate the path between a current licensed band and a new licensed band |
| D. | Spectrum handoff latency is the time taken to send handoff information to the spectrum broker |
| Answer» B. Spectrum handoff latency is the period over which an xG user can use licensed band before handoff | |
| 167. |
Which among the following factors influence round trip time? |
| A. | Access technology |
| B. | Power efficiency |
| C. | Cost |
| D. | Frequency of operation |
| Answer» E. | |
| 168. |
Which among the following influences packet loss probability? |
| A. | Operation frequency |
| B. | Interference level |
| C. | Available bandwidth |
| D. | Medium Access Control protocol |
| Answer» E. | |
| 169. |
Which among the following does not cause performance degradation on TCP level? |
| A. | Link error |
| B. | Packet loss |
| C. | Admission control |
| D. | Access delay |
| Answer» E. | |
| 170. |
Which of the following metals follows logarithmic oxidation law? |
| A. | Aluminum |
| B. | Copper |
| C. | Iron |
| D. | Aluminum, copper, and iron |
| Answer» E. | |
| 171. |
Which of the following is/are true regarding parabolic oxidation rate law? |
| A. | It was proposed by C. Wagner |
| B. | It states that square of weight loss is directly proportional to the time of exposure |
| C. | It was proposed by C. Wagner which states that square of weight loss is directly proportional to the time of exposure and it resembles non-steady-state diffusion-controlled reactions |
| D. | It resembles non-steady-state diffusion-controlled reactions |
| Answer» D. It resembles non-steady-state diffusion-controlled reactions | |
| 172. |
Which of the following metal doesn’t follow linear oxidation law? |
| A. | Sodium |
| B. | Aluminum |
| C. | Niobium |
| D. | Potassium |
| Answer» C. Niobium | |
| 173. |
Which of the following is/are correct regarding linear oxidation law? |
| A. | Weight gain per unit area of the metal is directly proportional to the exposure time |
| B. | It is a characteristic of porous or cracked scale |
| C. | Sodium is an example that follows linear oxidation law |
| D. | Weight gain per unit area of metal is directly proportional to exposure time, it is characteristic of porous or cracked scale and sodium follows linear oxidation law |
| Answer» E. | |
| 174. |
Which of the following oxidation rate law is depicted as z in the given figure? |
| A. | Linear law |
| B. | Parabolic law |
| C. | Cubic law |
| D. | Parabolic law |
| Answer» D. Parabolic law | |
| 175. |
Which of the following oxidation rate law is depicted as x in the given figure? |
| A. | Linear law |
| B. | Parabolic law |
| C. | Cubic law |
| D. | Parabolic law |
| Answer» B. Parabolic law | |
| 176. |
What are the types of oxidation rate laws? |
| A. | Linear and parabolic law |
| B. | Cubic and logarithmic law |
| C. | Linear, parabolic and cubic law |
| D. | Linear, parabolic, cubic and logarithmic law |
| Answer» E. | |
| 177. |
Diffusion-controlled oxidation can be minimized by decreasing the concentration of ionic defects in the scale. |
| A. | False |
| B. | True |
| Answer» C. | |
| 178. |
Which of the following is/are correct regarding the measurement of the rate of oxidation? |
| A. | Weight loss per unit area of metal is the measure of the rate of oxidation |
| B. | Either weight loss or weight gain per unit area of metal is the measure of the rate of oxidation |
| C. | Weight gain per unit area of metal is the measure of the rate of oxidation |
| D. | Neither weight loss nor weight gain per unit area of metals is the measure of the rate of oxidation |
| Answer» D. Neither weight loss nor weight gain per unit area of metals is the measure of the rate of oxidation | |
| 179. |
In general, all oxides are nonstoichiometric in nature their composition varies from an ideal molecular formula. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 180. |
‘α’ is the angle between target plate and flyer plate. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 181. |
What is the minimum thickness that can be welded in ultrasonic welding? |
| A. | 0.58 mm |
| B. | 0.21 mm |
| C. | 0.38 mm |
| D. | 0.92 mm |
| Answer» D. 0.92 mm | |
| 182. |
What is the maximum frequency used in ultrasonic welding? |
| A. | 30,000 Hz |
| B. | 40,000 Hz |
| C. | 50,000 Hz |
| D. | 60,000 Hz |
| Answer» E. | |
| 183. |
At what temperature, does fusion welding takes place? |
| A. | 850°C |
| B. | 900°C |
| C. | 950°C |
| D. | 1000°C |
| Answer» C. 950°C | |
| 184. |
Methanol possess ___________ inflammability. |
| A. | Lower |
| B. | Higher |
| C. | No |
| D. | Moderate |
| Answer» B. Higher | |
| 185. |
___________ is in high concentration in methanol that is why it is used as an excellent fuel. |
| A. | Oxygen |
| B. | Chlorine |
| C. | Hydrogen |
| D. | Ozone |
| Answer» D. Ozone | |
| 186. |
Methanol fuel cells are reasonably _________ |
| A. | Stable at all conditions |
| B. | Unstable at all conditions |
| C. | Stable at some conditions |
| D. | Unstable at some conditions |
| Answer» B. Unstable at all conditions | |
| 187. |
Porous nickel electrode coated with ________ is used as catalyst in methyl alcohol-oxygen alkaline fuel cell. |
| A. | Copper |
| B. | Silver |
| C. | Gold |
| D. | Antimony |
| Answer» C. Gold | |
| 188. |
In methyl alcohol-oxygen alkaline fuel cell ___________ is used as the fuel. |
| A. | CH3OH |
| B. | CH3COOH |
| C. | O2 |
| D. | O3 |
| Answer» B. CH3COOH | |
| 189. |
The standard emf of the hydrogen-oxygen fuel is ____________ |
| A. | 1V |
| B. | 1.23V |
| C. | 1.52V |
| D. | 2V |
| Answer» C. 1.52V | |
| 190. |
In winter months, especially at night, the ionospheric D layer can virtually disappear. |
| A. | False |
| B. | True |
| Answer» C. | |
| 191. |
What is the allocated frequency range for MF in North America? |
| A. | 525 MHz to 1705 MHz |
| B. | 52 kHz to 170 kHz |
| C. | 525 kHz to 1705 kHz |
| D. | 525 MHz to 1705 MHz |
| Answer» D. 525 MHz to 1705 MHz | |
| 192. |
In medium frequency, same frequencies are re-allocated to different broadcasting stations. |
| A. | False |
| B. | True |
| Answer» C. | |
| 193. |
What is the frequency range of MF (Medium frequency)? |
| A. | 300 Hz to 3 MHz |
| B. | 300 kHz to 3 MHz |
| C. | 300 KHz to 3000 KHz |
| D. | 300 kHz to 300 MHz |
| Answer» C. 300 KHz to 3000 KHz | |
| 194. |
Frequencies immediately below medium frequency band are referred to as _________ |
| A. | High frequency |
| B. | Ultra high frequency |
| C. | Low frequency |
| D. | Ultra low frequency |
| Answer» D. Ultra low frequency | |
| 195. |
Which of the following frequency is used by the US Coastguard? |
| A. | 2670 kHz |
| B. | 2670 MHz |
| C. | 2670 Hz |
| D. | 2670 mHz |
| Answer» B. 2670 MHz | |
| 196. |
What is the wavelength range for medium frequency? |
| A. | 1000 to 100cm |
| B. | 1000 to 100miles |
| C. | 1000 to 100m |
| D. | 1000 to 100km |
| Answer» D. 1000 to 100km | |
| 197. |
The Medium frequency band is also known as ________ |
| A. | Pentameter band |
| B. | Hectometer band |
| C. | Quadmeter band |
| D. | Hexameter band |
| Answer» C. Quadmeter band | |
| 198. |
Radio waves at Medium Frequency wavelengths propagate via ___________ |
| A. | Ground waves |
| B. | Air waves |
| C. | Sky waves |
| D. | Electric waves |
| Answer» B. Air waves | |
| 199. |
The clear-channel stations are required to broadcast at higher powers of ___________ |
| A. | 10 mW to 50 mW |
| B. | 10 MW to 50 MW |
| C. | 10 W to 50 W |
| D. | 10 kW to 50 kW |
| Answer» E. | |
| 200. |
Which of the following affects a Charpy test? |
| A. | Specimen gauges factor |
| B. | Test machine frequency |
| C. | Colour |
| D. | Yield strength |
| Answer» E. | |