MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Casting knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The penetration power of X-rays depends only on the wavelength of the radiation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The film produced by an X-ray is called as a radiograph. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
For what thickness of a material, do the X-rays give the best results? |
| A. | 50 mm |
| B. | 55 mm |
| C. | 60 mm |
| D. | 65 mm |
| Answer» B. 55 mm | |
| 4. |
THE_PENETRATION_POWER_OF_X-RAYS_DEPEND_ONLY_ON_THE_WAVELENGTH_OF_THE_RADIATION.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
THE_FILM_PRODUCED_BY_AN_X-RAY_IS_CALLED_AS_A_RADIOGRAPH.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Which of the following can be a wavelength of gamma ray? |
| A. | 2 x 10-8 cm |
| B. | 3 x 10-8 cm |
| C. | 4 x 10-8 cm |
| D. | 5 x 10-8 cm |
| Answer» C. 4 x 10-8 cm | |
| 7. |
For what thickness of a material, do the X-rays give best results? |
| A. | 50 mm |
| B. | 55 mm |
| C. | 60 mm |
| D. | 65 mm |
| Answer» B. 55 mm | |
| 8. |
What should the diameter of a Cobalt-60 source used for producing gamma rays? |
| A. | 2 mm |
| B. | 3 mm |
| C. | 4 mm |
| D. | 5 mm |
| Answer» C. 4 mm | |
| 9. |
Which of the following is not a source of production for gamma rays? |
| A. | Cobalt-60 |
| B. | Iridium-192 |
| C. | Caesium-167 |
| D. | Americium-241 |
| Answer» E. | |
| 10. |
What is the lower range of wavelength of the X-rays? |
| A. | 0.001 x 10-5 cm |
| B. | 0.001 x 10-6 cm |
| C. | 0.001 x 10-7 cm |
| D. | 0.001 x 10-8 cm |
| Answer» E. | |
| 11. |
X-rays are useful in detecting defects in casts up to what thickness? |
| A. | 60 mm |
| B. | 61 mm |
| C. | 62 mm |
| D. | 63 mm |
| Answer» D. 63 mm | |
| 12. |
On what voltage do the X-rays operate? |
| A. | 350 kV |
| B. | 375 kV |
| C. | 400 kV |
| D. | 475 kV |
| Answer» D. 475 kV | |