MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Materials knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The object under ultrasonic inspection must have parallel surfaces. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Eddy current inspection is only used for ferromagnetic materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The total resistance of the coil in Eddy current inspection (ECI) is known as __________ |
| A. | Impedance |
| B. | Inductance |
| C. | Reactance |
| D. | Capacitance |
| Answer» B. Inductance | |
| 4. |
What is the main reason for the limitation of depth below 6mm in Eddy current inspection (ECI)? |
| A. | Surface coating |
| B. | Electron hole pair generation |
| C. | Skin effect |
| D. | Residual stresses |
| Answer» D. Residual stresses | |
| 5. |
Eddy current inspection (ECI) is generally restricted to a depth below ___________ |
| A. | 1µm |
| B. | 1mm |
| C. | 2mm |
| D. | 6mm |
| Answer» E. | |
| 6. |
WHICH_OF_THE_FOLLOWING_IS_THE_POOREST_TRANSMITTER_OF_SOUND??$ |
| A. | Oil |
| B. | Water |
| C. | Air |
| D. | Copper |
| Answer» D. Copper | |
| 7. |
What is the drawback of ultrasonic testing?$ |
| A. | Low depth |
| B. | High sensitivity |
| C. | Shape restriction |
| D. | Higher errors |
| Answer» C. Shape restriction | |
| 8. |
Which_of_the_following_is_the_best_transmitter_of_sound?$ |
| A. | Oil |
| B. | Aluminum |
| C. | Steel |
| D. | Copper |
| Answer» D. Copper | |
| 9. |
Ultrasonic testing is destructive testing? |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
The object under inspection must have parallel surfaces. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
What is a type of piezoelectric crystal? |
| A. | Natural |
| B. | Normal |
| C. | Angle |
| D. | Transverse |
| Answer» B. Normal | |
| 12. |
What is acoustic impedance (in MPa s/m) of aluminum? |
| A. | 1.58 |
| B. | 45.72 |
| C. | 16.77 |
| D. | 41.08 |
| Answer» D. 41.08 | |
| 13. |
Standard penetration depth varies from material to material. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
ECI is only used for ferromagnetic materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 15. |
The density of eddy current ____________ with distance from the surface in center. |
| A. | Increase linearly |
| B. | Increase exponentially |
| C. | Decrease linearly |
| D. | Decrease exponentially |
| Answer» E. | |
| 16. |
The total resistance of the coil of ECI is known as __________ |
| A. | Impedance |
| B. | Inductance |
| C. | Reactance |
| D. | Capacitance |
| Answer» B. Inductance | |
| 17. |
What is the reason for the limitation of depth below 6mm in ECI? |
| A. | Surface coating |
| B. | Electron hole pair generation |
| C. | Skin effect |
| D. | Residual stresses |
| Answer» D. Residual stresses | |
| 18. |
ECI is generally restricted to a depth below ___________ |
| A. | 1µm |
| B. | 1mm |
| C. | 2mm |
| D. | 6mm |
| Answer» E. | |
| 19. |
What principle defines eddy current inspection (ECI)? |
| A. | Lenz law |
| B. | Biot-Savart Law |
| C. | Electromagnetic induction principle |
| D. | Faraday’s law |
| Answer» D. Faraday‚Äö√Ñ√∂‚àö√ë‚àö¬•s law | |