MCQOPTIONS
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This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Instrumentation Transducers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
PVDF_IS_________________MATERIAL.?$ |
| A. | Piezoelectric |
| B. | Magnetostrictive |
| C. | Thermoelectric |
| D. | Electrostrictive |
| Answer» B. Magnetostrictive | |
| 2. |
SNR_is_signal_to_noise_ratio.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Copolymer of PVDF have lower temperature capacity than PVDF? |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Thickness of PVDF film will be_______________ |
| A. | Less than 100um |
| B. | Less than 10nm |
| C. | Less than 100mm |
| D. | Less than 1cm |
| Answer» B. Less than 10nm | |
| 5. |
PVDF inultrasonic scanning technique can be used at temperature _________________ |
| A. | Less than 20<sup>0</sup>C |
| B. | Less than 70<sup>0</sup>C |
| C. | Greater than 100<sup>0</sup>C |
| D. | None of the mentioned |
| Answer» C. Greater than 100<sup>0</sup>C | |
| 6. |
By placing sensor nearer to AE, SNR _____________ |
| A. | Increases |
| B. | Decreases |
| C. | Doubles |
| D. | No change |
| Answer» B. Decreases | |
| 7. |
Acoustic emission signals will be of the form ______________ |
| A. | Discrete transients |
| B. | Quasi continuous |
| C. | Discrete or quasi continuous |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 8. |
Which of the following causes acoustic emission in machineries? |
| A. | Friction |
| B. | Vibration |
| C. | Turbulance |
| D. | All of the mentioned |
| Answer» E. | |
| 9. |
Phenomenon of producing sound under mechanical stress is called________________ |
| A. | Magnetostriction |
| B. | Acoustiction |
| C. | Electrostriction |
| D. | Acoustic emission |
| Answer» E. | |
| 10. |
AFM stands for ________________ |
| A. | Auto focusing microscope |
| B. | Antenna focusing microscope |
| C. | Atomic force microscope |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |