 
			 
			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 | |