MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Processes knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Weld pool geometry can be controlled by using multiple laser beams. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The arc is on the same side of the workpiece as the laser. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 3. |
Arc Augmented Laser Welding is used for _____ |
| A. | higher penetration |
| B. | reducing power loss |
| C. | stabilizing the arc |
| D. | improve wed quality |
| Answer» D. improve wed quality | |
| 4. |
The temperature required for using arc augmented welding phenomenon is around _____ |
| A. | 100 C |
| B. | 200 C |
| C. | 300 C |
| D. | 400 C |
| Answer» D. 400 C | |
| 5. |
Cracking happens due to _____ |
| A. | shrinkage stress |
| B. | improper gas shielding |
| C. | high weld speeds |
| D. | high wavelength |
| Answer» B. improper gas shielding | |
| 6. |
In case of laser welding of dissimilar metals, there are chances of formation of _____ |
| A. | porous welds |
| B. | brittle welds |
| C. | thin welds |
| D. | cracks |
| Answer» C. thin welds | |
| 7. |
How many issues are there concerning laser welding? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» D. 5 | |
| 8. |
Which of the following gases is most favourable as shrouding gases in laser welding? |
| A. | Oxygen |
| B. | Helium |
| C. | Argon |
| D. | Chlorine |
| Answer» C. Argon | |
| 9. |
The shroud gas enters the keyhole because of _____ |
| A. | the fast emission of vapour from the keyhole |
| B. | the narrower shape of the keyhole |
| C. | higher wavelength of the beam |
| D. | molten material |
| Answer» B. the narrower shape of the keyhole | |
| 10. |
Which of the following is not affected by the gas shroud? |
| A. | Formation of plasma |
| B. | Hindrance to the beam |
| C. | Absorption of the beam |
| D. | Pool width |
| Answer» E. | |
| 11. |
The welds which do not require filler material are called _____ materials. |
| A. | autogenous |
| B. | autofiller |
| C. | non-filler |
| D. | isotropic |
| Answer» B. autofiller | |
| 12. |
For welds having larger gaps,_____ |
| A. | the beam is rotated |
| B. | an extra lens is added |
| C. | high energy density beam is used |
| D. | zif-zag welds are made |
| Answer» B. an extra lens is added | |
| 13. |
The gap between the components should be smaller than _____ |
| A. | half of the beam diameter |
| B. | beam diameter |
| C. | square of the beam diameter |
| D. | one quarter of the beam diameter |
| Answer» B. beam diameter | |
| 14. |
The pressure at the centre is a function of the _____ |
| A. | surface tension |
| B. | joint geometries |
| C. | material composition |
| D. | gap tolerance |
| Answer» B. joint geometries | |
| 15. |
The difference between welding at long and short wavelengths is due to _____ |
| A. | high absorptivity |
| B. | high reflectivity |
| C. | polarisation |
| D. | shroud design |
| Answer» B. high reflectivity | |