MCQOPTIONS
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MCQOPTIONS
This section includes 346 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Electrical strain gauge works on the principle of |
| A. | variation of resistance |
| B. | variation of capacitance |
| C. | variation of inductance |
| D. | variation of area |
| Answer» B. variation of capacitance | |
| 202. |
The strain gauge is not bonded to the specimen. |
| A. | true |
| B. | false |
| Answer» C. | |
| 203. |
Composite capacitance consists of |
| A. | one dielectric medium |
| B. | more than one dielectric medium |
| C. | five dielectric media |
| D. | ten dielectric media |
| Answer» C. five dielectric media | |
| 204. |
What is the relation between capacitance and input impedance? |
| A. | directly proportional |
| B. | constant |
| C. | proportional to square |
| D. | inversely proportional |
| Answer» B. constant | |
| 205. |
What is the relation between capacitance and output impedance? |
| A. | proportional to square |
| B. | constant |
| C. | directly proportional |
| D. | inversely proportional |
| Answer» E. | |
| 206. |
Capacitive pressure transducer uses distance of separation for sensing the capacitance. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 207. |
Frequency response of capacitive transducers is |
| A. | high |
| B. | medium |
| C. | low |
| D. | zero |
| Answer» D. zero | |
| 208. |
Capacitive transducer displays |
| A. | linear behaviour |
| B. | non-linear behaviour |
| C. | exponential behaviour |
| D. | tangential behaviour |
| Answer» C. exponential behaviour | |
| 209. |
Capacitance can be varied in |
| A. | 10 ways |
| B. | 6 ways |
| C. | 2 ways |
| D. | 4 ways |
| Answer» E. | |
| 210. |
A capacitive transducer works on the principle of |
| A. | inductance |
| B. | capacitance |
| C. | resistance |
| D. | reluctance |
| Answer» C. resistance | |
| 211. |
Which of the following is used in photo conductive cell? |
| A. | selenium |
| B. | quartz |
| C. | rochelle salt |
| D. | lithium sulphate |
| Answer» B. quartz | |
| 212. |
Which of the following can be measured using Piezo-electric transducer? |
| A. | c = a∈â„d |
| B. | c = ∈â„d |
| C. | c = aâ„d |
| D. | c = a |
| Answer» B. c = ∈â„d | |
| 213. |
Capacitive transducer is used for? |
| A. | static measurement |
| B. | dynamic measurement |
| C. | transient measurement |
| D. | both static and dynamic |
| Answer» C. transient measurement | |
| 214. |
Which of the following is an analog transducer? |
| A. | encoders |
| B. | strain gauge |
| C. | digital tachometers |
| D. | limit switches |
| Answer» C. digital tachometers | |
| 215. |
What is the principle of operation of LVDT? |
| A. | mutual inductance |
| B. | self-inductance |
| C. | permanence |
| D. | reluctance |
| Answer» B. self-inductance | |
| 216. |
What is the relation between scale factor and sensitivity of a transducer? |
| A. | scale factor is double of sensitivity |
| B. | scale factor is inverse of sensitivity |
| C. | sensitivity is inverse of scale factor |
| D. | sensitivity is equal to scale factor |
| Answer» C. sensitivity is inverse of scale factor | |
| 217. |
Which of the following represent active transducer? |
| A. | strain gauge |
| B. | thermistor |
| C. | lvdt |
| D. | thermocouple |
| Answer» E. | |
| 218. |
A transducer converting ground movement or velocity to voltage is known as |
| A. | geophone |
| B. | pickup |
| C. | hydrophone |
| D. | sonar transponder |
| Answer» B. pickup | |
| 219. |
At null position, galvanometer reading will be |
| A. | maximum |
| B. | zero |
| C. | unchanged for further reading |
| D. | none |
| Answer» C. unchanged for further reading | |
| 220. |
Which of the following devices cannot be used potentiometer as calibrating device? |
| A. | watt meter |
| B. | energy meter |
| C. | voltmeter |
| D. | all of the mentioned |
| Answer» E. | |
| 221. |
Which of the following is not a characteristic of an ideal transducer? |
| A. | high dynamic range |
| B. | low linearity |
| C. | high repeatability |
| D. | low noise |
| Answer» C. high repeatability | |
| 222. |
A potentiometer cannot be used for calibration of ammeter. |
| A. | true |
| B. | false |
| Answer» C. | |
| 223. |
Power consumption of unknown source connected will be |
| A. | very high |
| B. | very low |
| C. | zero ideally |
| D. | always constant |
| Answer» D. always constant | |
| 224. |
Which of the following is not possible? |
| A. | constant current potentiometer |
| B. | constant resistance potentiometer |
| C. | thermocouple potentiometer |
| D. | none of the mentioned |
| Answer» E. | |
| 225. |
Galvanometer is used for |
| A. | calibration of potentiometer |
| B. | indication of null position |
| C. | providing stability |
| D. | all of the mentioned |
| Answer» C. providing stability | |
| 226. |
Galvanometer used should be calibrated first. |
| A. | true |
| B. | false |
| Answer» C. | |
| 227. |
Which of the following cannot be measured using potentiometer? |
| A. | dc voltage |
| B. | temperature |
| C. | resistance |
| D. | none of the mentioned |
| Answer» E. | |
| 228. |
Which of the following device is used for calibration of a potentiometer? |
| A. | electrochemical cell |
| B. | galvanometer |
| C. | variable dc source |
| D. | all of the mentioned |
| Answer» B. galvanometer | |
| 229. |
Standardization of potentiometer is used for |
| A. | accuracy |
| B. | accuracy in measurement |
| C. | use of low voltage sources |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 230. |
Which among the following is not a dynamic characteristic? |
| A. | response speed |
| B. | accuracy |
| C. | retardation type measuring lag |
| D. | time delay lag |
| Answer» C. retardation type measuring lag | |
| 231. |
Which instrument can be used to measure time without any errors? |
| A. | analog clock |
| B. | digital clock |
| C. | atomic clock |
| D. | doomsday clock |
| Answer» D. doomsday clock | |
| 232. |
Which method can reduce dynamic error? |
| A. | by increasing accuracy |
| B. | by increasing precession |
| C. | by reducing sensitivity |
| D. | by reducing time lag |
| Answer» E. | |
| 233. |
Measuring lag is a dynamic characteristic. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 234. |
In time delay type measuring lag the instrument responds immediately as soon as the input is altered. |
| A. | true |
| B. | false |
| Answer» C. | |
| 235. |
Fidelity is a static characteristic. |
| A. | true |
| B. | false |
| Answer» C. | |
| 236. |
Which among the following transducer is an example of passive transducer? |
| A. | chemical transducer |
| B. | thermoelectric transducer |
| C. | strain gauge |
| D. | piezoelectric transducer |
| Answer» D. piezoelectric transducer | |
| 237. |
Which among the following transducer is an example of active transducer? |
| A. | ldr (light dependant sensor) |
| B. | strain gauge |
| C. | hall effect sensor |
| D. | photovoltaic cell |
| Answer» E. | |
| 238. |
Active transducers do not require power source for operation. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 239. |
In retardation type measuring lag the instrument responds after an unspecified dead time lag. |
| A. | true |
| B. | false |
| Answer» C. | |
| 240. |
Which error is also termed as measurement error? |
| A. | static errors |
| B. | dynamic errors |
| C. | systematic errors |
| D. | statical error |
| Answer» C. systematic errors | |
| 241. |
A Mechatronics system contains feedback. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 242. |
Where is the feedback generated by sensors in a mechatronics system given? |
| A. | input sensors |
| B. | comparators |
| C. | mechanical actuators |
| D. | output sensors |
| Answer» C. mechanical actuators | |
| 243. |
A humanoid robot is an example of |
| A. | artificial intelligence |
| B. | stand-alone systems |
| C. | large factory systems |
| D. | high level distributed sensor microcontroller actuator |
| Answer» B. stand-alone systems | |
| 244. |
Which among the following carry out the overall control of a system? |
| A. | graphical display |
| B. | sensors |
| C. | actuators |
| D. | digital controls |
| Answer» E. | |
| 245. |
Example of ‘Stand-alonesystem’ is |
| A. | machining centres |
| B. | washing machine |
| C. | robots for parts handling |
| D. | automated inspection stations |
| Answer» C. robots for parts handling | |
| 246. |
The main mechanical components of a servo motor are stator and rotor. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 247. |
What is the function of an input signal conditioning unit? |
| A. | to produce control signals |
| B. | to amplify the signal and convert it into digital form |
| C. | to perform mechanical work |
| D. | to produce electrical signals |
| Answer» C. to perform mechanical work | |
| 248. |
Where and when was the word Mechatronics invented? |
| A. | japan(1960) |
| B. | japan(1980) |
| C. | europe(1960) |
| D. | europe(1980) |
| Answer» B. japan(1980) | |
| 249. |
If the damper is not provided and the system is in resonance, which of the following is the correct isolation factor? |
| A. | 0 |
| B. | 1/2 |
| C. | 1/4 |
| D. | infinity |
| Answer» E. | |
| 250. |
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be |
| A. | to move the ship towards starboard |
| B. | to move the ship towards port side |
| C. | to raise the bow and lower the stern |
| D. | to raise the stern and lower the bow |
| Answer» B. to move the ship towards port side | |